Auxiliary GT4 Left Radiator, C&R - F8X M2/M3/M4

C&R (PWR) aluminum auxiliary radiator from the M4 GT4 and M2 CSR can be used on standard F87 M2 Competition, F80 M3, F82 M4, and M4 GTS models for a bolt-in upgrade.

This is an all aluminum tube-and-fin auxiliary radiator upgrade from motorsport specialists PWR. This is the small radiator located in the left (driver's) side front bumper and helps support the cooling from the main radiator. It's an extra radiator that adds more surface area to cool engine coolant. Given its location it is more susceptible to rocks and debris.
 

• Handmade and professionally TIG welded in the USA
• Motorsport-engineered tube and R-fin technology for the highest heat rejection
• Direct replacement for the original PWR M4 GT4 and M2 CSR cooler
• Billet aluminum tanks
• Up to 30% increase in cooling efficiency
• Proven with the M4 GT4 and M2 CS Racing programs

BMW added this extra radiator to the left front bumper to increase cooling capacity and surface area. For their factory racing models they needed extra cooling performance, especially on the long-run endurance races. C&R is part of the PWR cooling group, world-famous for their expertise in cooling at the top levels of GT, Le Mans, NASCAR, and F1 racing. They used their own tube and fin core to maximize the cooling efficiency in the tight space available. The end tanks are billet machined aluminum, not cast, folded, or bonded. High precision fittings, CNC machining, and TIG welding throughout ensures the highest quality construction to prevent pressure loss, and the lowest weight, in a bolt-on replacement.