CTS Turbo Mercedes-Benz M157/M278/M133 Auxiliary Radiator

The CTS Turbo auxiliary radiator delivers critical supplementary cooling for Mercedes-Benz M157, M278 and M133 powerplants. Engineered to suit CLA45, SL450, SL550, SL63 and SL65 variants across R231 and C117 chassis, this direct-fit solution addresses the thermal demands of high-output AMG applications and boosted four-cylinder configurations. Factory mounting points and hose connections simplify installation while expanded core volume improves heat dissipation during extended performance driving. Essential for builds pushing beyond standard parameters or operating in demanding Australian conditions where sustained temperatures challenge OEM cooling systems.