{"product_id":"csf-bmw-b58-gen-2-m240i-m340i-m440i-supra-high-performance-front-mount-heat-exchanger","title":"CSF BMW B58 Gen 2 (M240I\/M340I\/M440I\/Supra) High-Performance Front Mount Heat Exchanger","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003eThe 2nd-generation B58 engine faces a genuinely well-documented problem: its liquid-cooled charge air system heat soaks rapidly with no ability to recover, driving intake air temperatures high enough that the ECU cuts power - and in severe cases, triggers limp mode. This isn't theoretical: at the 2019 Global Time Attack Finals at Buttonwillow Raceway, several heavily modified B58-powered Supras could only manage 2-3 laps before overheating, forcing drivers into cool-down laps or improvised trackside fixes like spraying water directly on their heat exchangers.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003eCSF's High-Performance Heat Exchanger solves this at the source. Through multiple prototypes, CSF fit the largest and most efficient cooler achievable within the OEM housing - the factory unit is a single-row core just 27mm thick, while CSF's industry-exclusive design uses the world's largest 2-row core at 68mm, built with their B-Tube technology and filling the entire available area beneath the OEM X-brace. A unique triple-pass flow design routes water through the core three times before it exits and returns to the manifold charge cooler, ensuring the lowest possible outlet temperature - a genuine advantage over both the OEM design and every other aftermarket option, which use single-pass flow. A detachable rock guard is included for protection in this exposed position.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003e \u003c\/p\u003e\n\u003ch2 dir=\"ltr\" class=\"text-text-100 mt-2 -mb-1 text-base font-bold\"\u003eWhy Choose This Heat Exchanger\u003c\/h2\u003e\n\u003cul dir=\"ltr\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3 print:block print:space-y-1\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eWorld's largest 2-row, 68mm core\u003c\/strong\u003e - versus the OEM's single-row, 27mm design\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eUnique triple-pass flow design\u003c\/strong\u003e - lowest achievable outlet water temperature, unlike single-pass OEM or competitor units\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eFaster heat soak recovery\u003c\/strong\u003e - directly addresses the documented track-day overheating issue on this platform\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eFills the entire available space beneath the OEM X-brace\u003c\/strong\u003e - genuinely the largest cooler that fits\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eIncludes detachable rock guard\u003c\/strong\u003e - protects the core in this exposed front-mount position\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eMirror-polished finish available\u003c\/strong\u003e\u003cstrong\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2 dir=\"ltr\" class=\"text-text-100 mt-2 -mb-1 text-base font-bold\"\u003eCompatibility\u003c\/h2\u003e\n\u003cul dir=\"ltr\" class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3 print:block print:space-y-1\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eBMW G20 M340i (B58 Gen 2)\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eBMW G22 M440i (B58 Gen 2)\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eBMW G42 M240i (B58 Gen 2)\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eToyota GR Supra A90\/MK5 (B58 Gen 2)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"CSF","offers":[{"title":"Default Title","offer_id":54427172176205,"sku":"CSF-8154","price":889.0,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0980\/4808\/2253\/files\/csf-bmw-b58-gen-2-m240i-m340i-m440i-supra-high-performance-front-mount-heat-exchanger.webp?v=1785407190","url":"https:\/\/i6tuning.com\/products\/csf-bmw-b58-gen-2-m240i-m340i-m440i-supra-high-performance-front-mount-heat-exchanger","provider":"Inline6 Tuning","version":"1.0","type":"link"}