{"product_id":"heat-exchanger-kit-bmw-m550i-m850i","title":"Heat Exchanger Kit | BMW M550i\/M850i","description":"\u003ch3 class=\"PDq2pG_selectionAnchorContainer\"\u003eCarBahn Heat Exchanger Kit – BMW M550i \/ M850i\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h3\u003e\n\u003cp\u003eThe CarBahn Heat Exchanger Kit increases the cooling capacity of the BMW N63’s water-to-air charge-cooling system, helping maintain lower and more consistent intake-air temperatures under sustained boost.\u003c\/p\u003e\n\u003cp\u003eBMW’s factory heat exchanger can become overwhelmed during repeated acceleration, aggressive street driving, track use, or operation in hot climates. As charge-air temperatures rise, the engine management system may reduce ignition timing to protect the engine—causing power to fade from one pull to the next.\u003c\/p\u003e\n\u003cp\u003eCarBahn’s auxillary heat exchanger features a high-efficiency, multi-row bar-and-plate core with approximately 40% more thermal surface area than the factory unit. Optimized coolant routing distributes coolant evenly across the core, while low-restriction end tanks preserve coolant flow and improve heat rejection. The result is reduced heat soak, more stable ignition timing, and consistent, repeatable performance.\u003c\/p\u003e\n\u003cp\u003eEngineered as a direct-fit upgrade, the system integrates with the factory mounting points and cooling circuit for a clean installation without compromising OEM functionality. It is recommended for tuned vehicles, hard street use, repeated high-speed pulls, and track driving—and is required for CarBahn Stage 2 tuning and above.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eApproximately 40% more thermal surface area than the factory heat exchanger\u003c\/li\u003e\n\u003cli\u003eHigh-efficiency, multi-row bar-and-plate core\u003c\/li\u003e\n\u003cli\u003eImproves heat rejection from the charge-cooling circuit\u003c\/li\u003e\n\u003cli\u003eHelps reduce intake-air temperatures and heat soak\u003c\/li\u003e\n\u003cli\u003eSupports more stable ignition timing under sustained boost\u003c\/li\u003e\n\u003cli\u003eOptimized coolant routing for even core utilization\u003c\/li\u003e\n\u003cli\u003eLow-restriction end-tank design maintains coolant flow\u003c\/li\u003e\n\u003cli\u003eDirect-fit construction using factory mounting locations\u003c\/li\u003e\n\u003cli\u003eRequired for CarBahn Stage 2 tuning and above\u003c\/li\u003e\n\u003cli\u003eApproximately three hours of installation labor, excluding bumper removal\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eVehicle Fitment\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2018–2023 BMW M550i Sedan\u003c\/li\u003e\n\u003cli\u003e2019–2025 BMW M850i Sedan\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"CarBahn","offers":[{"title":"Default Title","offer_id":53071245508925,"sku":"CBB08-00-6570","price":1595.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0883\/1896\/8125\/files\/CarBahn-BMW-M550i-M850-Heat-Exchanger.jpg?v=1789407182","url":"https:\/\/carbahn.com\/products\/heat-exchanger-kit-bmw-m550i-m850i","provider":"CarBahn","version":"1.0","type":"link"}