{"product_id":"csf-audi-b5-a4-1-8t-high-performance-all-aluminum-radiator","title":"CSF Audi B5 A4 1.8T High-Performance All-Aluminum Radiator","description":"\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eWith over five decades of expertise in radiator manufacturing, CSF stands as a leader in delivering superior cooling solutions. The \u003cstrong\u003eCSF Audi B5 A4 1.8T High-Performance All-Aluminum Radiator\u003c\/strong\u003e exemplifies this commitment, engineered to maintain optimal engine temperatures and enhance the performance of your B5 A4 1.8T. Whether for daily driving or competitive motorsports, this radiator is meticulously designed to meet the rigorous demands of high horsepower applications and race environments requiring exceptional cooling capacity.\u003c\/p\u003e\n\u003cp\u003eThis radiator incorporates a 2-Row core featuring CSF's proprietary \u003cem\u003eB-Tube Technology\u003c\/em\u003e. Unlike conventional oval “O” type tubes, the innovative “B” shaped tubes are precision-formed and seam-brazed to achieve superior strength and durability. This advanced design allows the use of thinner, lighter aluminum material without compromising structural integrity, resulting in improved cooling efficiency. The unique inlet positioned in the middle of the brazed seam increases the heat transfer surface area by approximately 15% compared to standard tubes, effectively delivering the cooling performance of two smaller tubes within the same spatial constraints.\u003c\/p\u003e\n\u003cp\u003eAdditionally, the “B-tubes” facilitate dual liquid laminar flow, optimizing coolant movement through the radiator. Complementing this design, CSF employs ultra-efficient multi-louvered fins that are precisely aligned to maximize airflow across the radiator core. Each fin’s dimensions and orientation are carefully calculated and validated through extensive wind-tunnel testing to ensure maximum heat rejection efficiency, providing reliable cooling under demanding conditions.\u003c\/p\u003e\n\u003cp\u003eThe CSF B5 A4 1.8T radiator is engineered as a true “Drop-in fit” replacement, requiring no modifications for installation. All mounting brackets are CNC machined and welded to OE specifications, ensuring exceptional durability and precise fitment. The inlet and outlet connections are designed to match OEM configurations, allowing seamless integration with existing hoses—whether OEM or aftermarket—simplifying the upgrade process.\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\u003e45 Cooling Tubes utilizing CSF's exclusive B-Tube Technology for superior heat transfer\u003c\/li\u003e\n\u003cli\u003e6.5mm Tall Ultra Efficient Fins with 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 fit and durability\u003c\/li\u003e\n\u003cli\u003eConstructed from 100% All Aluminum with TIG-Welded joints ensuring strength and corrosion resistance\u003c\/li\u003e\n\u003cli\u003eFinished with a Smooth Satin coating for added protection and aesthetic appeal\u003c\/li\u003e\n\u003cli\u003eTrue Plug-and-Play “Drop-in Fit” installation requiring absolutely no modifications\u003c\/li\u003e\n\u003cli\u003eDesigned exclusively for Manual Transmission applications\u003c\/li\u003e\n\u003cli\u003eEach unit is individually Leak and Pressure Tested to guarantee reliability\u003c\/li\u003e\n\u003cli\u003eBacked by a 2-Year Limited Warranty for peace of mind\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\u003e1998\u003c\/td\u003e\n\u003ctd\u003eAudi\u003c\/td\u003e\n\u003ctd\u003eB5\u003c\/td\u003e\n\u003ctd\u003eA4\u003c\/td\u003e\n\u003ctd\u003eAvant\u003c\/td\u003e\n\u003ctd\u003eTurbocharged 1.8L L4 (Manual)\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1997-2001\u003c\/td\u003e\n\u003ctd\u003eAudi\u003c\/td\u003e\n\u003ctd\u003eB5\u003c\/td\u003e\n\u003ctd\u003eA4\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003ctd\u003eTurbocharged 1.8L L4 (Manual)\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1998-2001\u003c\/td\u003e\n\u003ctd\u003eAudi\u003c\/td\u003e\n\u003ctd\u003eB5\u003c\/td\u003e\n\u003ctd\u003eA4 Quattro\u003c\/td\u003e\n\u003ctd\u003eAvant\u003c\/td\u003e\n\u003ctd\u003eTurbocharged 1.8L L4 (Manual)\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1997-2001\u003c\/td\u003e\n\u003ctd\u003eAudi\u003c\/td\u003e\n\u003ctd\u003eB5\u003c\/td\u003e\n\u003ctd\u003eA4 Quattro\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003ctd\u003eTurbocharged 1.8L L4 (Manual)\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1998-2001\u003c\/td\u003e\n\u003ctd\u003eVolkswagen\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003ctd\u003ePassat\u003c\/td\u003e\n\u003ctd\u003eGLS\u003c\/td\u003e\n\u003ctd\u003eTurbocharged 1.8L L4 (Manual)\u003c\/td\u003e\n\u003ctd\u003e-\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch5\u003eOEM Part Numbers\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003eAudi: 8D0 121 251 P\u003c\/li\u003e\n\u003cli\u003eAudi: 8D0-121-251-P\u003c\/li\u003e\n\u003cli\u003eAudi: 8D0121251P\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003eWarranty\u003c\/h5\u003e\n\u003cp\u003eCooling Systems and Flexibles, Inc. (CSF) guarantees the quality and performance of its High-Performance Cooling Systems under normal use and service to the original purchaser of the vehicle in which the product was originally installed. For comprehensive warranty details, please visit our \u003cb\u003e\u003ca href=\"https:\/\/csf-performance.myshopify.com\/pages\/warranty\"\u003eWarranty Page\u003c\/a\u003e\u003c\/b\u003e.\u003c\/p\u003e\n\u003cp\u003eSKU# 7204 Warranty Term: 2 years\u003c\/p\u003e\n\u003cp\u003eIn summary, the CSF Audi B5 A4 1.8T High-Performance All-Aluminium Radiator represents a pinnacle of engineering excellence, combining innovative design with precision manufacturing to deliver reliable, efficient cooling. Its robust construction, advanced B-Tube Technology, and meticulous testing ensure that your vehicle maintains optimal operating temperatures under all conditions, safeguarding engine performance and longevity. Trust CSF to provide a high-quality, durable radiator that meets the exacting standards of both enthusiasts and professional racers alike.\u003c\/p\u003e","brand":"R44 Performance","offers":[{"title":"Default Title","offer_id":53695397658953,"sku":"CSF-7204","price":899.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0974\/9463\/0729\/files\/csf-audi-b5-a4-18t-high-performance-all-aluminum-radiatorradiatorrace-rally-suppliescsf-7204-8325105.jpg?v=1773300142","url":"https:\/\/rrs-store.co.uk\/products\/csf-audi-b5-a4-1-8t-high-performance-all-aluminum-radiator","provider":"Race Rally Supplies","version":"1.0","type":"link"}