CSF Audi B8 S4/S5 & 3.0L/3.2L Audi Models High-Performance All-Aluminum Radiator

With over five decades of dedicated expertise in radiator manufacturing, CSF stands as a benchmark for quality and reliability in automotive cooling solutions. The CSF Audi B8 S4/S5 & 3.0L/3.2L Audi Models High-Performance All-Aluminum Radiator is engineered to meet the rigorous demands of both street performance and competitive motorsports environments, ensuring optimal engine temperature management under all operating conditions. This radiator is meticulously designed with a 2-Row 42mm core incorporating CSF’s exclusive B-Tube Technology, a significant advancement over traditional oval-shaped “O” tubes. The innovative “B” shaped tubes are precision-formed and seam-brazed to create a structure that is not only stronger but also lighter and more thermally efficient. This design enhances the heat transfer surface area by approximately 15%, effectively delivering the cooling performance equivalent to two smaller tubes within the same spatial constraints. The dual liquid laminar flow facilitated by the B-tubes optimizes coolant circulation, resulting in superior heat dissipation. Complementing the core technology, the radiator features ultra-efficient multi-louvered fins with a 6.5mm fin height, carefully aligned to maximize airflow and thermal exchange. These fins are engineered and tested in CSF’s state-of-the-art wind tunnel laboratory to ensure maximum heat rejection efficiency tailored to each specific application. The CSF Audi radiator is a true “Drop-in fit” component, designed for seamless installation without the need for any modifications. All OE-style brackets are CNC machined and welded, ensuring exceptional durability and precise fitment. The inlet and outlet connections are CNC machined to match original equipment specifications, allowing for the reuse of OEM hoses or compatible aftermarket components. Additionally, the radiator incorporates an upgraded plate-type transmission oil cooler integrated into the left side tank, enhancing transmission cooling performance for automatic transmission models. This cooler comes pre-plugged for manual transmission variants, underscoring the versatility of the design. Features 2-Row 42mm Core (Dual Core) Featuring CSF’s Exclusive B-Tube Technology Core with Ultra-Efficient Fins: 6.5mm Fin Height and Multi-Louvered Design for Maximum Surface Contact CNC Machined “Quick-Connect” Inlet and Outlet Connections for Precise Fit CNC Machined Brackets and Fittings to Ensure Durability and Accurate Installation All-Aluminum Race Style Drain Plug for Enhanced Reliability Smooth Satin Finish Providing a Professional Appearance and Corrosion Resistance “Drop-in Fit” Design Requiring No Modifications – Compatible with OEM Components Including Quick Connect Hoses, AC Condenser, Mounting Brackets, and Fan Shroud Applications Year Range Make Chassis Code Model Trim Engine / Trans / Etc Notes 2013-2014 Audi B8 A4 Quattro – Supercharged 3L V6 (Manual) – 2009-2012 Audi B8 A4 Quattro – 3.2L V6 (Automatic) – 2009-2012 Audi B8 A4 Quattro – 3.2L V6 (Manual) – 2015-2016 Audi B8 A5 – Supercharged 3L V6 (Automatic) – 2015-2016 Audi B8 A5 – Supercharged 3L V6 (Manual) – 2008-2010 Audi B8 A5 – 3.2L V6 (Automatic) – 2012-2016 Audi B8 A5 Quattro – Supercharged 3L V6 (Automatic) – 2012-2016 Audi B8 A5 Quattro – Supercharged 3L V6 (Manual) – 2008-2011 Audi B8 A5 Quattro – 3.2L V6 (Automatic) – 2008-2011 Audi B8 A5 Quattro – 3.2L V6 (Manual) – 2016 Audi C7 A6 – Supercharged 3L V6 (Manual) – 2012-2018 Audi C7 A6 Quattro – Supercharged 3L V6 (Automatic) – 2012-2018 Audi C7 A6 Quattro – Supercharged 3L