{"product_id":"csf-bmw-n55-m2-m135i-m235i-335i-435i-f2x-f3x-f87-high-performance-radiator","title":"CSF BMW N55 M2\/M135I\/M235I\/335I\/435I (F2X\/F3X\/F87) High-Performance Radiator","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003eKeep temperatures consistently low and prevent heat soak during prolonged fast driving with CSF's High-Performance Radiator, purpose-built for the N55-powered M2, M135i, M235i, 335i, and 435i. The 2-row, 42mm core uses CSF's exclusive B-Tube technology - rather than a regular oval \"O\"-shaped tube, a specially engineered \"B\"-shaped tube is carefully formed and brazed over the seam, increasing heat transfer surface area by approximately 15% over regular tubes while allowing for thinner, lighter, more efficient aluminium construction.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003ePaired with 6.5mm tall, ultra-efficient multi-louvered fins for maximum surface area contact, the radiator features CNC-machined quick-connect inlet\/outlet connections and all auxiliary connections, along with CNC-machined brackets and fittings for a superb, durable fit. An all-aluminium race-style drain plug and a genuine one-hour hand-polished mirror finish round out the build quality. It's a true drop-in fit, accepting all OEM attaching components - quick-connect hoses, AC condenser, mounting brackets, and fan shroud - with every unit individually leak tested and given a 30-point inspection before shipping.\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 Radiator\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\u003eCSF's exclusive B-Tube core technology\u003c\/strong\u003e - ~15% more heat transfer surface area than regular tubes\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003e6.5mm multi-louvered fins\u003c\/strong\u003e - maximised surface area for efficient heat rejection\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eCNC-machined fittings, brackets, and race-style drain plug\u003c\/strong\u003e - genuine durability and fit precision\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eHand-polished mirror finish\u003c\/strong\u003e - premium presentation alongside the performance upgrade\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eTrue drop-in fit\u003c\/strong\u003e - accepts all OEM attaching components, no modification required\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eIndividually leak tested with 30-point inspection\u003c\/strong\u003e - genuine quality control before shipping\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 F87 M2 (N55)\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eBMW F20\/F21 M135i (N55)\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eBMW F22\/F23 M235i (N55)\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eBMW F30\/F31\/F34 335i (N55)\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eBMW F32\/F33\/F36 435i (N55)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003e\u003cstrong\u003eFitment note:\u003c\/strong\u003e the thicker core tightens tolerances slightly between the expansion tank and accessory belt - not a fitment issue, but worth being aware of during installation.\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\"\u003ePart Number\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\"\u003eReplaces OEM part #17118672103 (manual) \/ #17118672104 (automatic)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"CSF","offers":[{"title":"Default Title","offer_id":54426781876557,"sku":"CSF-7078","price":869.0,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0980\/4808\/2253\/files\/csf-bmw-n55-m135i-m235i-335i-435i-f2x-f3x-high-performance-radiator.webp?v=1785403052","url":"https:\/\/i6tuning.com\/products\/csf-bmw-n55-m2-m135i-m235i-335i-435i-f2x-f3x-f87-high-performance-radiator","provider":"Inline6 Tuning","version":"1.0","type":"link"}