As the world leader in BMW performance cooling, CSF has taken the lead in introducing a full-line of competition-grade cooling products and complete packages for the B58 engine

CSF has already released its most popular Front Mount Heat Exchanger for the B58 Charge-Air Cooling System, highly regarded as the go-to option in the industry to reduce intake air temperatures (IATs) and proven on the world’s fastest Supras.

As more vehicles start to become raced in competitive motorsports, the glaring overheating issues that plague this platform have become even more apparent. CSF has answered the call with the release of new High-Performance Auxiliary (Side) Radiators as well as a world exclusive Dual-Core ZF 8HP Transmission Oil Cooler.

Don’t be fooled by other high-performance aftermarket options that utilize the OEM plastic rock guard. The OEM rock guard’s vertical channel design is specifically designed to only work with the tube spacing found on the OEM core. When the OEM rock guard is installed on an aftermarket radiator, it actually blocks a significant amount of surface area, detrimental to the intended performance. During CSF’s own R&D phase, CSF analyzed both the OEM and other aftermarket offerings and decided to take the extra step, redesigning the included rock guard to allow maximum flow to the radiator core, but still offering ample protection from small rocks and road debris – all proven on CSF’s in-house wind tunnel.

CSF’s new Auxiliary Radiator fits both the left and right side of the vehicle as a drop-in fit, requiring no modifications to install. Featuring CNC machined mounting brackets and OEM style “Quick Connect” inlet/outlet connections for a true plug-and-play installation that does not interfere with aftermarket performance aero modifications.

• 2-Row, 42mm Ultra High Performance Core
• 6.5mm Tall Multi-Louvered Fin with CSF’s Exclusive B-Tube Technology
• CNC Machined Mounting Brackets and OEM Style “Quick Connect” Inlet/Outlet
• 100% All Aluminum TIG-Welded Construction
• Includes Detachable Aluminum Rock Guard (Industry Exclusive)
• Finished in a Thermal Black Protective Coating
• Fits Both Left & Right Side of Vehicle
• 2-Year Limited Warranty
• Drop-in Fit Requires No Modifications to Install
• Tested and Proven by CSF’s Global Network of R&D Partners, Including Leading Time Attack Teams, Tuners, and Turbo Kit Manufacturers
• OEM # 17118672237 (BMW)
• MSRP/MAP Pricing: $329.00 USD Each
  • Two-Piece Special Pricing (L/R) $599.00 USD

CarBahn has produced the largest and most thermally efficient heat exchanger on the market. Increasing cooling capacity by 40%. This heat exchanger utilizes F1 heat exchanger technology. This heat exchanger technology is dramatically more efficient than the lower cost heat exchangers on the market. The race car heat exchanger is significantly lighter weight.

Increasing boost generates more heat. The addition of the heat exchanger allows you to run more boost safely by reducing charge air temperature. This reduction in charge air temperature also makes more power.  This is particularly noticeable in summer months when ambient temperatures are higher.

When used in conjunction with CarBahn software the addition of this heat exchanger provides enough safety that we can offer a factory matching warranty on your engine and drivetrain.

The F8X M3/M4 utilizes a top-mount liquid-to-air intercooler for charge air cooling. Responsible for cooling this circuit’s coolant is the front-mount heat exchanger. CarBahn is proud to offer CSF’s upgrade to this unit.

Features:

Increasing boost generates more heat. The addition of the heat exchanger allows you to run more boost safely by reducing charge air temperature. This reduction in charge air temperature also makes more power.  This is particularly noticeable in summer months when ambient temperatures are higher.

When used in conjunction with CarBahn software the addition of this heat exchanger provides enough safety that we can offer a factory matching warranty on your engine and drivetrain.

The BMW F-series B58 engine is found in a wide array of BMW vehicles (M140i, M240i, 340i, 440i). The motor is similar to the S55 engine found in the latest generation F8x M3/M4 (and new M2 competition) in that it has an indirect water-to-air charge cooling system with a supplemental front mount heat exchanger to cool the water that circulates through the charge cooler. However, unlike the S55 motor, the BMW B58 charge cooler is built into the plastic intake manifold housing. In the meantime of continued development of its high-performance manifold charge cooler, CSF has first released their new BMW B58 heat exchanger for BMW F-Series vehicles. This new high performance heat exchanger drastically reduces water temperatures in the charge cooling cycle, which in turn reduces and stabilizes the intake air temperatures of the engine. With many unique features, included accessories, and of course, industry-leading performance, it without a doubt the best option on the market for every consumer whether it be for a daily driver or a high-performance race car.

Another critical feature of the CSF BMW B58 high-performance heat exchanger is its unique triple-pass flow design. The water traveling through the upgraded heat exchanger flows through the radiator three times before exiting the cooler and flowing back into the manifold charge cooler. This ensures that the outlet water temperature of the heat exchanger is the absolute lowest it can be. The OEM design, as well as more expensive aftermarket designs, all have single-pass flow structures.

• Core size: 524mm Length x 478mm Height x 69mm Wide
• 68mm 2-row core with B-tube technology (world largest 2-row core)
• 6.5 mm multi-louvered fin height
• Triple-pass flow design
• Included / detachable rock guard
• OEM CNC Machined mounting location pins and brackets
• Direct Plug and Play, including CNC, machined Quick-connect inlet/outlet water fittings
• No Modifications needed to install
• Comes inblack or silver finish

What Included?

• BMW High Performance B58 Heat Exchanger
• Hardware Kit
• Detachable rock guard

Fitment chart

OEM# 17118741830

Supercedes OEM# 17118625430; 17118482625

• Significantly Reduced Intake Air Temperatures for Maximum Performance
• 2 Row, 42mm Core (Dual Core) Featuring CSF Exclusive B-Tube Technology
• Core Features Ultra-Efficient, 6mm Tall Fins with a Multi-Louvered Design for Maximum Surface Area Contact
• Individually Leak and Pressure Tested
• CNC Machined Brackets and Fittings for Superb Fit and Durability
• Integrated All-Aluminum Race Style Bleeder Screw
• 1 Hour Mirror Finish Hand Polish
• Drop-in Fit Requires No Modifications to Install
• Includes Detachable Rock Guard

• Stepped core design for maximum surface area contact and internal intake air-flow volume. Largest drop-in fit intercooler available in the industry.
• Designed with 3D scanning / rapid prototype technology to ensure precise fitment and maximum surface area utilization. Lab tested on CSF in-house wind tunnel.
• Rounded front face bar/plate design for optimized airflow through the core.*
• Drop-in fit design for an easy & quick plug-and-play installation. Complete with OEM style Quick-Connect inlet/outlet connections.
• Fully reversible back to OEM spec with no modifications needed.
• Available in silver (#CBN55-2001) and matte black (#CBN55-2001B)
• Lifetime warranty.
• Fits the following applications.
• BMW F30, F32, F22, F87 M235i, M2, 328i, 428i, 335i, 435i, N55 intercooler
• ~40 *F drop in temperatures when compared to the OEM intercooler after multiple repeated runs.
• Power increase of 15-20 hp on stock cars, 25 hp on modified vehicles.

OEM# 17517600531 / 17517600530

• Stepped core design for maximum surface area contact and internal intake air-flow volume. Largest drop-in fit intercooler available in the industry.
• Designed with 3D scanning / rapid prototype technology to ensure precise fitment and maximum surface area utilization. Lab tested with an in-house wind tunnel.
• Rounded front face bar/plate design for optimized airflow through the core.*
• Drop-in fit design for an easy & quick plug-and-play installation. Complete with OEM style Quick-Connect inlet/outlet connections.
• Fully reversible back to OEM spec with no modifications needed.
• Available in silver (#CBN55-2001) and matte black (#CBN55-2001B)
• Lifetime warranty.
• Fits the following applications.
• BMW F30, F32, F22, F87 M235i, M2, 328i, 428i, 335i, 435i, N55 intercooler
• ~40 *F drop in temperatures when compared to the OEM intercooler after multiple repeated runs.
• Power increase of 15-20 hp on stock cars, 25 hp on modified vehicles.

OEM# 17517600531 / 17517600530

CSF is proud to announce the first ever cast endtank designed top-mount intercooler for the BMW S55 engine! Utilizing multiple air dividers cast into the hot/cold side endtanks for optimized air flow. CSF designed this liquid-to-air core from a blank slate, and completed extensive testing and analysis to ensure optimum performance and cooling. The core itself is 60% larger and features a dual-corecross-flow design with 2-stage water cooling for maximum efficiency. If you’re looking for a superior product with enhanced cooling and maximum efficiency, look no further than this CSF top-mount intercooler. Available in black or raw finish

Features:

• World’s 1st Cast Endtank Designed Top Mount Charge-Air-Cooler for the BMW S55 Engine in the BMW F80 M3, F82/F83 M4, and F87 M2 Competition
• Multiple Air Dividers Cast into Both Hot/Cold Side Endtanks for Optimized Air Flow Through the Custom Designed CSF Liquid-to-Air Intercooler Core (CFD Analysis and Testing Completed to Ensure Optimal Performance)
• **60% Increase in Core Size Compared to the OEM Cooler
• Left/Right, Crossflow, Dual-Pass Core Configuration with 2-Stage Water Cooling for Maximum Efficiency and Intake Temperature Reduction (vs. OEM Single-Pass Vertical-Flow Design)
• Designed with 3D Scanning/Rapid Prototype Technology to Ensure Precise Fitment and Maximum Surface Area Utilization
• “Drop-in Fit” Design for an Easy & Quick Plug-and-Play Installation, Complete with OEM-Style “Quick-Connect” Water Connections and Sensor Ports
• Lifetime Warranty
• OEM #: 17517846235

• World 1st cast end tank designed high-performance charge-air-cooler set for the BMW F1x m5/m6
• Custom designed CSF liquid-to-air intercooler core (CFD analysis and testing completed to ensure optimal performance)
• 28% increase in core size per each charge cooler compared to the OEM charge air coolers.
• Top/bottom, cross-flow, dual-pass core configuration with 2-stage water cooling for maximum efficiency and intake temperature reduction
• Designed with 3D scanning / rapid prototype technology to ensure precise fitment and maximum surface area utilization.
• Drop-in fit design for an easy & quick plug-and-play installation. Complete with OEM style Quick-Connect water connections and sensor ports.
• Additional E85/methane injection ports built into the cast end tank design
• Finished with a professional Crinkle Black powder coat finish (CSF #8109). Also available in raw aluminum finish with option for custom powder coating available (inquire for more details on lead time and pricing)
• Lifetime warranty

Includes: complete set with left & right charge-air-coolers installation hardware

CarBahn has produced the largest most thermally efficient heat exchanger on the market. Increasing cooling capacity by 40%. This heat exchanger utilizes F1 heat exchanger technology. This heat exchanger technology is dramatically more efficient than the lower cost heat exchangers on the market. The race car heat exchanger is significantly lighter weight.

Increasing boost generates more heat. The addition of the heat exchanger allows you to run more boost safely by reducing charge air temperature. This reduction in charge air temperature also makes more power.This is particularly noticeable in summer months when ambient temperature is high.

When used in conjunction with CarBahn software the addition of this heat exchanger providers enough safety that we can offer a factory matching warranty on your engine and drivetrain.

Dual intercoolers 

CarBahn CSF larger dual intercoolers is a very efficient heat exchanging that will allow you to run more boost and extract more power. They are a very efficient intercooler replacement and are tied into the stock heat exchanger circuit. They work best when used in conjunction with CarBahn heat exchangers and software. They are designed to compensate for additional heat generated by increased boost. The reduced intake air temperature increases air density and is a must to extract maximum power and ensure reliability of the engine with High boost applications.  

About Steve Dinan:  

Steve Dinan has over 40 years of streetcar tuning experience. As an engine supplier we won 3 prototype racing championships and two overall wins at the 24hrs of Daytona partnering with Chip Ganassi Racing. No one know more about tuning high performance engines than Steve Dinan. 

Warranty Information:

Click here for all queries related to CarBahn Warranty.

Dual intercoolers 

CarBahn CSF larger dual intercoolers is a very efficient heat exchanging that will allow you to run more boost and extract more power. They are a very efficient intercooler replacement and are tied into the stock heat exchanger circuit. They work best when used in conjunction with CarBahn heat exchangers and software. They are designed to compensate for additional heat generated by increased boost. The reduced intake air temperature increases air density and is a must to extract maximum power and ensure reliability of the engine with High boost applications.  

About Steve Dinan:  

Steve Dinan has over 40 years of streetcar tuning experience. As an engine supplier we won 3 prototype racing championships and two overall wins at the 24hrs of Daytona partnering with Chip Ganassi Racing. No one know more about tuning high performance engines than Steve Dinan. 

Warranty Information: 

*Registration with CarBahn Autoworks at time of purchase is required to maintain matching warranty coverage. CarBahn Autoworks reserves the right to deny warranty program enrollment under certain conditions. Please contact us prior to purchase if you have any questions. 

*Warranty valid on U.S. and Canadian specification vehicles only. If your vehicle is currently covered by the vehicle manufacturer’s new car limited warranty, CarBahn Autoworks’ products are warranted for the remaining term of the vehicle manufacturer’s new car limited warranty. The manufacturer’s new car warranty is limited to 4 years or 50,000 miles (80,000 kilometers in Canada), commencing on the date of first retail sale or the date the vehicle is first placed in-service as a demonstrator or company vehicle, whichever is earlier. CarBahn Autoworks’ warranties are transferable when ownership of the vehicle into which the CarBahn Autoworks products were originally installed is sold. The warranty will, without charge for parts or labor, repair or replace the defective CarBahn Autoworks’ component(s), as well as any original vehicle manufacturer’s component(s) that may have been directly affected by a CarBahn Autoworks component, using new or authorized remanufactured parts. The decision to repair or replace said parts is at the sole discretion of CarBahn Autoworks. Parts for which replacements are supplied under this limited warranty become the property of CarBahn Autoworks. In all cases, a reasonable period must be allowed for warranty repairs to be completed. 

If your vehicle is outside of the vehicle manufacturer’s new car limited warranty, for two (2) years from the original purchase date of the CarBahn Autoworks product, CarBahn Autoworks will repair or replace, at its sole discretion, any defective CarBahn Autoworks component. This warranty does not include reimbursement for repairs to any original vehicle manufacturer’s component(s) that may have been affected by a CarBahn Autoworks component. 

*Warranty exclusions: 

Return shipping charges, towing charges, rental car fees damage to a component or assembly due to the installation of replacement parts with specifications that differ in any material respect from the original vehicle manufacturer’s or CarBahn Autoworks parts, damage resulting from the unauthorized modification of a CarBahn Autoworks part or assembly, damage resulting from the use of other manufacturer’s products in conjunction with CarBahn Autoworks’ products or systems, damage to the clutch due to power shifting or abuse, brake rotor warp, friction materials, maintenance services and parts when replaced during maintenance such as spark plugs, lubricants, fluids, engine tune-up parts, replacement of filters, coolant and refrigerant, mechanical adjustments or repairs which result from normal wear and tear, drive-belts, light bulbs, damage due to the failure to perform maintenance services at the specified intervals or in accordance with the instructions in the owner’s manual from the original vehicle manufacturer or CarBahn Autoworks’ product instructions, damage attributable to negligence or abuse, improper installation, improper treatment or treatment contrary to the instructions in the owner’s manual from the original vehicle manufacturer or CarBahn Autoworks’ product instructions, engine damage resulting from alteration of CarBahn Autoworks’ original boost pressure, damage resulting from the use of improper or contaminated fuel, damage occurring through corrosion resulting from weak or improper coolant, damage to a CarBahn Autoworks component as a result of a collision or improper collision damage repairs, any vehicle operated in any competitive event or subjected to aggressive track conditions, custom-designed competition parts, damages resulting from loss of time, inconvenience or loss of the use of the vehicle, damage resulting from environmental influences, flood, accident, fire damage, or road salt corrosion, re-manufactured or refurbished products or components (these products are clearly identified as re-furbished and are warranted for the period specified for that particular product). 

Dual intercoolers

CarBahn CSF larger dual intercoolers is a very efficient heat exchanging that will allow you to run more boost and extract more power. They are a very efficient intercooler replacement and are tied into the stock heat exchanger circuit. They work best when used in conjunction with CarBahn heat exchangers and software. They are designed to compensate for additional heat generated by increased boost. The reduced intake air temperature increases air density and is a must to extract maximum power and ensure reliability of the engine with High boost applications.

About Steve Dinan: 

Steve Dinan has over 40 years of streetcar tuning experience. As an engine supplier we won 3 prototype racing championships and two overall wins at the 24hrs of Daytona partnering with Chip Ganassi Racing. No one know more about tuning high performance engines than Steve Dinan.

Warranty Information:

*Registration with CarBahn Autoworks at time of purchase is required to maintain matching warranty coverage. CarBahn Autoworks reserves the right to deny warranty program enrollment under certain conditions. Please contact us prior to purchase if you have any questions.

*Warranty valid on U.S. and Canadian specification vehicles only. If your vehicle is currently covered by the vehicle manufacturer’s new car limited warranty, CarBahn Autoworks’ products are warranted for the remaining term of the vehicle manufacturer’s new car limited warranty. The manufacturer’s new car warranty is limited to 4 years or 50,000 miles (80,000 kilometers in Canada), commencing on the date of first retail sale or the date the vehicle is first placed in-service as a demonstrator or company vehicle, whichever is earlier. CarBahn Autoworks’ warranties are transferable when ownership of the vehicle into which the CarBahn Autoworks products were originally installed is sold. The warranty will, without charge for parts or labor, repair or replace the defective CarBahn Autoworks’ component(s), as well as any original vehicle manufacturer’s component(s) that may have been directly affected by a CarBahn Autoworks component, using new or authorized remanufactured parts. The decision to repair or replace said parts is at the sole discretion of CarBahn Autoworks. Parts for which replacements are supplied under this limited warranty become the property of CarBahn Autoworks. In all cases, a reasonable period must be allowed for warranty repairs to be completed.

If your vehicle is outside of the vehicle manufacturer’s new car limited warranty, for two (2) years from the original purchase date of the CarBahn Autoworks product, CarBahn Autoworks will repair or replace, at its sole discretion, any defective CarBahn Autoworks component. This warranty does not include reimbursement for repairs to any original vehicle manufacturer’s component(s) that may have been affected by a CarBahn Autoworks component.

*Warranty exclusions:

Return shipping charges, towing charges, rental car fees, damage to a component or assembly due to the installation of replacement parts with specifications that differ in any material respect from the original vehicle manufacturer’s or CarBahn Autoworks parts, damage resulting from the unauthorized modification of a CarBahn Autoworks part or assembly, damage resulting from the use of other manufacturer’s products in conjunction with CarBahn Autoworks’ products or systems, damage to the clutch due to power shifting or abuse, brake rotor warp, friction materials, maintenance services and parts when replaced during maintenance such as spark plugs, lubricants, fluids, engine tune-up parts, replacement of filters, coolant and refrigerant, mechanical adjustments or repairs which result from normal wear and tear, drive-belts, light bulbs, damage due to the failure to perform maintenance services at the specified intervals or in accordance with the instructions in the owner’s manual from the original vehicle manufacturer or CarBahn Autoworks’ product instructions, damage attributable to negligence or abuse, improper installation, improper treatment or treatment contrary to the instructions in the owner’s manual from the original vehicle manufacturer or CarBahn Autoworks’ product instructions, engine damage resulting from alteration of CarBahn Autoworks’ original boost pressure, damage resulting from the use of improper or contaminated fuel, damage occurring through corrosion resulting from weak or improper coolant, damage to a CarBahn Autoworks component as a result of a collision or improper collision damage repairs, any vehicle operated in any competitive event or subjected to aggressive track conditions, custom-designed competition parts, damages resulting from loss of time, inconvenience or loss of the use of the vehicle, damage resulting from environmental influences, flood, accident, fire damage, or road salt corrosion, re-manufactured or refurbished products or components (these products are clearly identified as re-furbished and are warranted for the period specified for that particular product).

The OEM intercooler is made from plastic end tanks that are crimped on to an aluminum tube/fin core that is ~4 inches thick (105mm core width) and is 5 inches in height (127mm). This may be enough to keep IAT in check on a completely unmodified / stock vehicle, but once users to start increase power through bolt-on modifications, tuning, and built engines, the OEM intercooler will become the Achilles heel of the system with IAT skyrocketing out of the optimal range and drastically lowering the performance capabilities of the vehicle. With this new, stepped core design, bar/plate high performance BMW n54 intercooler. This drop-in fit intercooler, which requires no modifications to install, has a bottom / larger section that is 5.5 inches thick (140mm) with a front face that is massive ~8.25 inches tall (210mm). A huge improvement over the OEM unit, and enough to handle even the most advanced n54 engine builds.

• The Only TRUE Plug-and-Play Solution Compared to the Rest
• No Cheaper Silicone Hose Clamp System, BMW Style Quick-Connect Machined Fittings
• OEM Mounting Locations with Fitment Kit and Instructions Included
• Clears OEM Crash Bar, No Modification to Install with No Cutting or Trimming Required
• Bottom/Larger: Section: 5.5 Thick (140mm)
• Massive Front Face: ~8.25 Tall (210mm)

Fitment Chart

OEM# 17517540035

• The Only TRUE Plug-and-Play Solution Compared to the Rest
• No Cheaper Silicone Hose Clamp System, BMW Style Quick-Connect Machined Fittings
• OEM Mounting Locations with Fitment Kit and Instructions Included
• Clears OEM Crash Bar, No Modification to Install with No Cutting or Trimming Required
• Bottom/Larger: Section: 5.5 Thick (140mm)
• Massive Front Face: ~8.25 Tall (210mm)

The OEM intercooler is made from plastic end tanks that are crimped on to an aluminum tube/fin core that is ~4 inches thick (105mm core width) and is 5 inches in height (127mm). This may be enough to keep IAT in check on a completely unmodified / stock vehicle, but once users to start increase power through bolt-on modifications, tuning, and built engines, the OEM intercooler will become the Achilles heel of the system with IAT skyrocketing out of the optimal range and drastically lowering the performance capabilities of the vehicle. With this new, stepped core design, bar/plate high performance BMW n54 intercooler. This drop-in fit intercooler, which requires no modifications to install, has a bottom / larger section that is 5.5 inches thick (140mm) with a front face that is massive ~8.25 inches tall (210mm). A huge improvement over the OEM unit, and enough to handle even the most advanced n54 engine builds.

The B58 engine is found in a wide array of vehicles; Z4 20i, 30i & M40i  G20 3-Series 320i, 330i, 330iX, M340i, M340iX G21 3-Series Touring (330i, 330iX, M340iX) The motor is similar to the S55 engine found in the latest generation F8x M3/M4 (and M2 Competition) in that it has an indirect water-to-air charge cooling system with a supplemental front mount heat exchanger to cool the water that circulates through the charge cooler. However, unlike the S55 motor, the BMW B58 charge cooler is built into the plastic intake manifold housing. In the meantime of continued development of its high-performance manifold charge cooler, CSF has first released their new BMW B58 heat exchanger for BMW G-Series vehicles. CSF’s new high performance B58 heat exchanger drastically reduces water temperatures in the charge cooling cycle, which in turn reduces and stabilizes the intake air temperatures of the engine. With many unique features, included accessories, and of course, industry-leading performance, it’s without a doubt the best option on the market for every consumer whether it be for a daily driver or a high-performance race car.

• Core size: 524mm Length x 478mm Height x 69mm Wide
• 42mm 2-row core with CSF’s B-tube technology 
• 6.5 mm multi-louvered fin height
• Triple-pass flow design
• Included / detachable rock guard
• OEM CNC Machined mounting location pins and brackets
• Direct Plug and Play, including CNC, machined Quick-connect” inlet/outlet water fittings
• No Modifications needed to install.

What’s Included?

• CSF BMW High Performance B58 Heat Exchanger
• Hardware Kit
• Detachable rock guard & Transmission Oil Cooler Mounting Kit (Industry Exclusive)

When designing this new cooler, CSF wanted to ensure the best possible performance with factory like fitment. This oil cooler is a truly unique design using CSF’s AC Condenser Technology. The 1-Row Super-High Pressure 16mm 9-Channel Microtube provides optimal oil flow and maximum surface area contact.

By keeping the factory mounting location and relative dimensions, the factory ducting, and shrouds are all reused with no modifications necessary. In addition, CSF added a removable/replaceable rock guard to keep the cooler safe.

• 8 mm Tall Multi-Louvered Fin vs. OEM 6mm
• Made with CSF’s AC Condenser Technology Using a 1-Row Super-High Pressure 32 mm 10-Channel Microtube for Optimal Oil Flow and Maximum Surface Area Contact
• Utilizes OEM Top/Bottom Rubber Seals for Optimal Airflow
• OEM Style Inlet/Outlet Connections
• Drop-in Fit Requires No Modifications to Install
• 2-Year Limited Warranty
• Ideal for Road Racing, Drag Racing, and Vehicles with Increased Performance and/or Transmission Tuning
• BMW: 17 11 8 095 293
• BMW: 17 21 8 095 297
• Lifetime Warranty

When designing this new cooler, CSF wanted to ensure the best possible performance with factory like fitment. This oil cooler is a truly unique design using CSF’s AC Condenser Technology. The 1-Row Super-High Pressure 16mm 9-Channel Microtube provides optimal oil flow and maximum surface area contact.

By keeping the factory mounting location and relative dimensions, the factory ducting, and shrouds are all reused with no modifications necessary. In addition, CSF added a removable/replaceable rock guard to keep the cooler safe.

• 4mm Tall Multi-Louvered Fin vs. OEM 7mm
• Made with CSF’s AC Condenser Technology Using a 1-Row Super-High Pressure 16mm 9-Channel Microtube for Optimal Oil Flow and Maximum Surface Area Contact
• Utilizes OEM Top/Bottom Rubber Seals for Optimal Airflow
• OEM Style Inlet/Outlet Connections
• Drop-in Fit Requires No Modifications to Install
• 2-Year Limited Warranty
• Ideal for Road Racing, Drag Racing, and Vehicles with Increased Performance and/or Transmission Tuning
• OEM #: 17212284540
• Lifetime Warranty

Like the other cooling systems on the F8X, the factory auxiliary radiators do a pretty good job in stock form. However, once you start adding a lot of power and pushing the car in aggressive driving conditions, the factory systems start to show its limitations. As more and more owners have pushed the limits of their S55, CSF saw the need and demand. The F8X platform is also almost a decade old with the newest examples being at least 5 years old. Over time the original coolers end up with damaged or clogged fins that greatly reduce their cooling capacity. CarBahn is proud to offer CSF’s upgrade to this unit. The CSF Engine Oil Cooler includes: 

• 1 Auxiliary Radiator  
• Sold Individually – all applications require 2 auxiliary radiators. 
• Multi-Fit – Fits Both Left & Right Side 

OEM Part Numbers: 

• BMW: 17-11-2-284-603 / 17112284603 (Left) 
• BMW: 17-11-2-284-604 / 17112284604 (Right) 

Each CSF F8X Auxiliary Radiator can fit the left or right side. The fitting and plugs are swappable and can be easily set up for either side.

Design, Development, and Testing

While the OEM Transmission Cooler is adequate for the G8X in stock form, it starts to come up a bit short on modified/tuned vehicles. Specifically ones that see heavy track/competition use. Transmission oil temperatures have a major impact on the shifting performance of your automatic transmission. If the fluid passes optimal temperatures you will start to see some delays in shifting. Sluggish shifting can be quite frustrating, but the real concern is the damage that can be done to the transmission when temperatures get too high. There are often cases where drivers don’t notice the change in shifting performance due to the gradual onset, but the damage is still being done slowly on a very expensive and important component.

By changing from the OEM single core design to a dual core, CSF was able to increase the overall volume by 194%. This design offers a drastic improvement in heat dissipation and increases the fluid capacity of the coolers by ~94%. Utilizing CSF’s AC Condenser Technology, a 1-Row Super-High Pressure 16mm 9-Channel Microtube design optimizes oil flow and offers maximum surface area contact. These features combine to offer the best possible heat dissipation from the system.

Rock Guard

CSF knows the kind of punishment the front of a car can take on or off the track. The wrong bit of debris flying through the front grille can quickly punch a hole in a cooler. Because the Transmission cooler sits at the very front of the center cooling stack, it is quite vulnerable to damage. In addition, “open face” race style grilles have become quite popular on the G8X. These grilles can add to the risk of debris passing through.

CSF is the world leader in BMW transmission cooling technology. From its experience starting with the transmission in the BMW F8X M3, M4, and M2 Comp, CSF applied several different features exclusive to its manufacturing technologies. An innovative dual-core design allows for a 240% increase in core volume, resulting in maximum performance and maintaining optimal shifting during extreme racing conditions – from road racing to the drag strip. During R&D, CSF consulted with a network of partners, including leading time attack teams, tuners, and more. Often, the feedback was gearbox fatigue and sluggish shifting with transmission temperatures overheating under prolonged or hard use. CSF has the answer with our industry-leading transmission cooler for the BMW G-Series’ ZF 8HP transmission.

• Innovative Dual-Core Design (Industry Exclusive) vs. OEM Single Core
  • 240% Increase in Core Volume
  • 130% Increase in Fluid Capacity Compared to OEM (CSF 550ml vs. OEM ~240ml)
  • Two 16mm Stacked Cores = 32mm Core Width (44mm Overall Width) vs. OEM 15mm Core Width
  • Rear Cooler: 15 Rows vs. OEM 12 Rows
  • Front Cooler: Additional 12 Rows
• 5.4mm Tall Multi-Louvered Fin vs. OEM 7mm
• Made with CSF’s AC Condenser Technology Using a 1-Row Super-High Pressure 16mm 9-Channel Microtube for Optimal Oil Flow and Maximum Surface Area Contact
• 129mm Overall Height vs. OEM 125mm Allows for Maximum Performance Without Increasing Overall Surface Area or Blocking Airflow to Rest of Cooling System
• Utilizes OEM Top/Bottom Rubber Seals for Optimal Airflow
• OEM Style “Quick Connect” Inlet/Outlet Connections
• Drop-in Fit Requires No Modifications to Install
• Can be Installed With CSF’s High-Performance Heat Exchanger (CSF #8154) or with the OEM Cooling System
• 2-Year Limited Warranty
• Ideal for Road Racing, Drag Racing, and Vehicles With Increased Performance and/or Transmission Tuning
• OEM #: 17219494828 (BMW)

Designed utilizing a single row high-pressure 26mm multi-channel microtube, CSF is proud to announce a true plug and play solution to upgrade your trans cooler. With a dual-core design, this cooler provides 67% increase in cooling rows for the ultimate in cooling efficiency. CSF has designed the radiator to fit the stock location and fittings perfectly. This means a hassle-free install and greater cooling for maximum performance from your car.