{"product_id":"csf-classic-small-chassis-audi-5-cylinder-high-performance-all-aluminum-radiator","title":"CSF Classic \u0026 Small Chassis Audi 5-Cylinder High-Performance All-Aluminum Radiator","description":"\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eWith over five decades of specialized experience in radiator manufacturing, CSF stands as a trusted leader in delivering high-quality cooling solutions. The CSF Classic \u0026amp; Small Chassis Audi 5-Cylinder High-Performance All-Aluminium Radiator embodies this legacy, offering exceptional reliability and efficiency tailored specifically for Audi Quattro models including B1, B2, B3, and B4 chassis. Engineered to excel both in everyday driving conditions and demanding motorsport environments, this radiator is an essential upgrade for vehicles requiring enhanced cooling performance, particularly those with high horsepower configurations or engaged in competitive racing.\u003c\/p\u003e\n\u003cp\u003eAt the core of this radiator’s superior performance lies CSF’s innovative 2-Row core design integrated with exclusive B-Tube Technology. Unlike conventional oval-shaped “O” tubes, CSF’s uniquely engineered “B” shaped tubes are meticulously formed and seam-brazed, resulting in a structure that is not only stronger but also lighter due to the use of thinner aluminium material. This design innovation increases the heat transfer surface area by approximately 15% compared to traditional tubes, effectively delivering the cooling efficiency of two smaller tubes within the same spatial constraints. The “B-tubes” facilitate dual liquid laminar flow, optimizing coolant movement and heat dissipation.\u003c\/p\u003e\n\u003cp\u003eComplementing the advanced tube design, the radiator incorporates ultra-efficient multi-louvered fins that are precisely aligned to maximize airflow through the core. Each fin’s dimensions and configuration are rigorously calculated and validated through extensive wind-tunnel testing to ensure peak heat rejection efficiency. This meticulous engineering results in a radiator that maintains optimal engine temperatures under intense operating conditions, thereby enhancing engine longevity and performance.\u003c\/p\u003e\n\u003cp\u003eThe CSF Audi radiator is designed as a true “Drop-in fit” replacement, requiring no modifications for installation. The inclusion of CNC-machined and welded OE-style mounting brackets guarantees durability and a precise fitment that aligns perfectly with factory specifications. Additionally, inlet and outlet connections are engineered to match original equipment manufacturer (OEM) standards, allowing seamless integration with existing OEM or aftermarket hoses. This thoughtful design ensures that installation is straightforward, minimizing downtime and complexity.\u003c\/p\u003e\n\u003ch5\u003eFeatures\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003e2-Row, 42mm Ultra-High-Performance Dual Pass Core for enhanced cooling capacity\u003c\/li\u003e\n\u003cli\u003eCooling Tubes utilizing CSF’s proprietary B-Tube Technology for increased strength and efficiency\u003c\/li\u003e\n\u003cli\u003e6.5mm Tall Ultra Efficient Fins featuring a Multi-Louvered Design to maximize surface area contact and airflow\u003c\/li\u003e\n\u003cli\u003eCNC Machined Mounting Brackets and OEM Style Inlet\/Outlet connections for precise fitment and compatibility\u003c\/li\u003e\n\u003cli\u003eConstructed from 100% All Aluminum with TIG-Welded joints ensuring durability and corrosion resistance\u003c\/li\u003e\n\u003cli\u003eSatin Black Finish providing an OEM+ aesthetic suitable for both street and track applications\u003c\/li\u003e\n\u003cli\u003eTrue Plug-and-Play “Drop-in Fit” installation that requires absolutely no modifications\u003c\/li\u003e\n\u003cli\u003eIndividually Leak and Pressure Tested to guarantee reliability and performance consistency\u003c\/li\u003e\n\u003cli\u003eModular design allowing use with or without an Auxiliary Radiator for flexible cooling system configurations\u003c\/li\u003e\n\u003cli\u003eMultiple Fan Shroud Mounting Points compatible with all fan models, including the High Performance RS2 variant\u003c\/li\u003e\n\u003cli\u003eMultiple overflow pipe locations on the top end tank accommodating different model variations\u003c\/li\u003e\n\u003cli\u003eSensor ports sized M22x1.5; early model M20x1.5 sensors may require an adapter\u003c\/li\u003e\n\u003cli\u003eBacked by a 2-Year Limited Warranty for peace of mind and product assurance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003eApplications\u003c\/h5\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eYear Range\u003c\/th\u003e\n\u003cth\u003eMake\u003c\/th\u003e\n\u003cth\u003eChassis Code\u003c\/th\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eTrim\u003c\/th\u003e\n\u003cth\u003eEngine \/ Trans \/ Etc\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e1991-1992\u003c\/td\u003e\n\u003ctd\u003eAudi\u003c\/td\u003e\n\u003ctd\u003eB3\u003c\/td\u003e\n\u003ctd\u003e80\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003ctd\u003e2.3L L5\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1988-1991\u003c\/td\u003e\n\u003ctd\u003eAudi\u003c\/td\u003e\n\u003ctd\u003eB3\u003c\/td\u003e\n\u003ctd\u003e90\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003ctd\u003e2.3L L5\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1980-1984\u003c\/td\u003e\n\u003ctd\u003eAudi\u003c\/td\u003e\n\u003ctd\u003eB2\u003c\/td\u003e\n\u003ctd\u003e4000\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003ctd\u003e2.2L L5\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1988-1992\u003c\/td\u003e\n\u003ctd\u003eAudi\u003c\/td\u003e\n\u003ctd\u003eB3\u003c\/td\u003e\n\u003ctd\u003e80 Quattro\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003ctd\u003e2.3L L5\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1990-1991\u003c\/td\u003e\n\u003ctd\u003eAudi\u003c\/td\u003e\n\u003ctd\u003eB3\u003c\/td\u003e\n\u003ctd\u003e90 Quattro\u003c\/td\u003e\n\u003ctd\u003e20v\u003c\/td\u003e\n\u003ctd\u003e2.3L L5\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1988-1991\u003c\/td\u003e\n\u003ctd\u003eAudi\u003c\/td\u003e\n\u003ctd\u003eB3\u003c\/td\u003e\n\u003ctd\u003e90 Quattro\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003ctd\u003e2.3L L5\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1986-1987\u003c\/td\u003e\n\u003ctd\u003eAudi\u003c\/td\u003e\n\u003ctd\u003eB3\u003c\/td\u003e\n\u003ctd\u003eCoupe\u003c\/td\u003e\n\u003ctd\u003eGT\u003c\/td\u003e\n\u003ctd\u003e2.2L L5\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1990-1991\u003c\/td\u003e\n\u003ctd\u003eAudi\u003c\/td\u003e\n\u003ctd\u003eB3\u003c\/td\u003e\n\u003ctd\u003eCoupe Quattro\u003c\/td\u003e\n\u003ctd\u003e20v\u003c\/td\u003e\n\u003ctd\u003e2.3L L5\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"R44 Performance","offers":[{"title":"Default Title","offer_id":53695442977097,"sku":"CSF-7208","price":1099.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0974\/9463\/0729\/files\/csf-classic-small-chassis-audi-5-cylinder-high-performance-all-aluminum-radiatorradiatorrace-rally-suppliescsf-7208-1225969.jpg?v=1773299136","url":"https:\/\/rrs-store.co.uk\/products\/csf-classic-small-chassis-audi-5-cylinder-high-performance-all-aluminum-radiator","provider":"Race Rally Supplies","version":"1.0","type":"link"}