{"product_id":"csf-bmw-m3-e46-triple-pass-high-performance-radiator","title":"CSF BMW M3 E46 Triple Pass High-Performance Radiator","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003eEngine heat is the enemy when pushing an E46 M3 hard, and CSF's Triple-Pass High-Performance Radiator was built specifically to keep it in check. Rather than a conventional single-pass design, coolant is routed across the core \u003cstrong\u003ethree times\u003c\/strong\u003e before exiting the radiator, for the lowest achievable outlet temperatures - a genuine upgrade for both high-horsepower builds and race cars needing added cooling margin in demanding motorsport environments.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003eThe 2-row, 42mm core features CSF's exclusive B-Tube technology - rather than a regular oval \"O\"-shaped tube, CSF uses a specially engineered \"B\"-shaped tube, carefully formed and brazed over the seam. This design increases heat transfer surface area by approximately \u003cstrong\u003e15%\u003c\/strong\u003e over regular tubes, delivering the efficiency of two smaller tubes within the same space as one large tube, while allowing for thinner, lighter, more thermally efficient aluminium. Paired with ultra-efficient multi-louvered fins, precisely aligned and wind-tunnel tested for each application, along with CNC-machined quick-connect fittings and brackets, the result is a true drop-in fit requiring no modifications to install - each unit hand-polished to a mirror finish.\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\u003eTriple-pass flow design\u003c\/strong\u003e - coolant crosses the core three times for the lowest possible outlet temperatures\u003c\/li\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\u003eUltra-efficient multi-louvered fins\u003c\/strong\u003e - wind-tunnel tested for maximum heat rejection per application\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e\n\u003cstrong\u003eCNC-machined brackets and quick-connect fittings\u003c\/strong\u003e - precise, stock-like fitment and long-term durability\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 - genuine show-car quality 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 - no cutting or modification required, same-as-stock installation\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 E46 M3 (2000-2006, S54)\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\"\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\"\u003eCSF #7058, replaces OEM part 17102228941\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"CSF","offers":[{"title":"Default Title","offer_id":54426684129613,"sku":"CSF-7058","price":829.0,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0980\/4808\/2253\/files\/csf-bmw-m3-e46-triple-pass-high-performance-radiator.webp?v=1785402308","url":"https:\/\/i6tuning.com\/products\/csf-bmw-m3-e46-triple-pass-high-performance-radiator","provider":"Inline6 Tuning","version":"1.0","type":"link"}