CSF Audi B8 S4 & S5 High Performance All-Aluminum Radiator

CSF has over 5 decades of experience manufacturing radiators. So when it comes to keeping your engine cool and your Audi running at its best, a CSF High-Performance All-Aluminum Radiator is the obvious choice. Designed to perform on the street or at the track, a performance radiator is a must-have for both high horsepower builds as well as race vehicles which need added cooling performance in motorsports environments. This radiator features a 2-Row core with CSF's exclusive B-Tube Technology: Unlike a regular oval shape "O" type radiator tube, CSF uses a specially engineered tube in the shape of a "B". These "B-tubes" are carefully formed and then brazed over the seam to seal. CSF is able to use thinner and lighter aluminum material (with better cooling efficiency) because this design is actually stronger than normal "O" shape tubes that are welded. The design (inlet in the middle of the tube that is seam brazed) increases the heat transfer surface area of the tubes by approximately 15% over regular tubes - producing the efficiency of two smaller tubes vs. one large tube within the same space criteria. With "B-tubes" you are able to get "dual liquid laminar flow". CSF also uses ultra efficient multi louvered fins that are carefully and precisely aligned to maximize airflow through each radiator core. Fin specifications are carefully measured and calculated for each application, and tested for maximum heat rejection efficiency in our wind-tunnel lab.This Part Fits: Year Make Model Submodel 2009-2014 Audi A4 Base 2009 Audi A4 Cabriolet 2009-2012 Audi A4 Quattro Avant 2009-2014 Audi A4 Quattro Base 2009 Audi A4 Quattro Cabriolet 2010-2014 Audi A5 Cabriolet 2008-2014 Audi A5 Quattro Base 2010-2014 Audi A5 Quattro Cabriolet 2015-2016 Audi A5 Quattro Premium 2015-2016 Audi A5 Quattro Premium Plus 2015 Audi A5 Quattro Prestige 2010-2011 Audi A6 Base 2012-2016 Audi A6 Premium 2012-2016 Audi A6 Premium Plus 2010-2011 Audi A6 Quattro Avant 2010-2011 Audi A6 Quattro Base 2017 Audi A6 Quattro Competition 2012-2015,2018 Audi A6 Quattro Premium 2012-2018 Audi A6 Quattro Premium Plus 2012-2018 Audi A6 Quattro Prestige 2018 Audi A6 Quattro Sport 2014-2016 Audi A6 Quattro TDI Premium Plus 2014-2016 Audi A6 Quattro TDI Prestige 2012-2013 Audi A7 Quattro Base 2017 Audi A7 Quattro Competition 2014-2018 Audi A7 Quattro Premium Plus 2014-2018 Audi A7 Quattro Prestige 2014-2016 Audi A7 Quattro TDI Premium Plus 2014-2016 Audi A7 Quattro TDI Prestige 2013-2016 Audi Q5 Hybrid Prestige 2009-2017 Audi Q5 Premium 2009-2017 Audi Q5 Premium Plus 2009-2017 Audi Q5 Prestige 2014-2016 Audi Q5 TDI Premium Plus 2016 Audi Q5 TDI Premium Plus S-Line 2014-2016 Audi Q5 TDI Prestige 2016 Audi Q5 TDI Prestige S-Line 2010-2013 Audi S4 Base 2014-2016 Audi S4 Premium Plus 2014-2016 Audi S4 Prestige 2010-2013,2017 Audi S5 Base 2010-2013 Audi S5 Cabriolet 2014-2016 Audi S5 Premium Plus 2014-2016 Audi S5 Prestige 2014-2017 Audi SQ5 Premium Plus 2014-2017 Audi SQ5 Prestige 2017-2018 Porsche Macan Base 2017-2018 Porsche Macan GTS 2015-2018 Porsche Macan S 2015-2018 Porsche Macan Turbo