{"product_id":"csf-classic-small-chassis-audi-5-cylinder-high-performance-radiator","title":"CSF Classic \u0026 Small Chassis Audi 5-Cylinder High-Performance Radiator","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003eThrough conversations with well-known figures in car culture, several of them avid classic Audi enthusiasts, it came to CSF's attention that there simply weren't any high-quality performance radiators available for many classic Audi 5-cylinder models, including the B2, B3, B4, and Ur Quattro. Making things worse, the OEM radiator is no longer available at all for the highly sought-after B4 S2\/RS2. Until now, owners of these cars were stuck choosing between hard-to-find OEM units, budget-quality aftermarket replicas, or poorly designed aluminium alternatives.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003eCSF partnered with specialists in classic Volkswagen and Audi vehicles to develop a genuinely modular design that fits the widest possible variety of platforms from this era. The 2-row, 42mm aluminium core not only increases fluid capacity over the original brazed copper and brass design, but also improves the core's ability to dissipate heat, using CSF's exclusive B-Tube technology to increase heat transfer by approximately 15% over regular oval welded tubes. The radiator can be configured to work with or without an auxiliary front radiator and factory air conditioning, and multiple fan shroud mounting points allow factory fans from all applications to be mounted without modification. The top end tank includes multiple overflow pipe connection points to suit factory configuration across every covered application, and the core is reinforced with additional straps for genuine strength and rigidity. CSF's thin, ultra-efficient core means the radiator mounts in the factory location using the original ducting, requiring no modifications or cutting, unlike other aftermarket aluminium radiators on the market that use a bulkier 3-row core and typically demand cutting to fit.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003e\u003cstrong\u003eWorks with:\u003c\/strong\u003e Factory ducting and mounting location. Configurable with or without auxiliary radiator and air conditioning connections.\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\"\u003eGenuinely modular design, configurable for a wide range of classic Audi 5-cylinder applications\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eFills a real gap in the market, especially for the B4 S2\/RS2, where OEM radiators are no longer available\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eCSF's exclusive B-Tube technology, approximately 15% more heat transfer than regular tubes\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eMultiple fan shroud and overflow connection points to suit factory configuration on all applications\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eThin, ultra-efficient core fits the factory location with original ducting, no cutting required\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eCore reinforced with additional straps for genuine strength and rigidity\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\"\u003eAudi Ur Quattro\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eAudi 4000 (B2)\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eAudi 80\/90 (B2\/B3\/B4)\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eAudi S2\/RS2 (B4)\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eAudi Coupe (B2\/B3)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal\" dir=\"ltr\"\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e confirm your exact model, year, and configuration (with\/without auxiliary radiator, with\/without A\/C) with your supplier, given the modular design and wide platform coverage.\u003c\/p\u003e","brand":"CSF","offers":[{"title":"Default Title","offer_id":54445116948813,"sku":"CSF-7208","price":889.0,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0980\/4808\/2253\/files\/csf-classic-small-chassis-audi-5-cylinder-high-performance-radiator.webp?v=1785681222","url":"https:\/\/i6tuning.com\/products\/csf-classic-small-chassis-audi-5-cylinder-high-performance-radiator","provider":"i6 Tuning","version":"1.0","type":"link"}