CSF 8321 High Performance Auxiliary Radiator for BMW M2 (G87) / M3 (G80 / G81) / M4 (G82 / G83)

Radiators are sold individually - all applications use two auxiliary radiators.

CSF designed the coolers to be a true “Drop-in Fit” for easy installation fitting both left and right sides. Each cooler mounts in the factory location and uses the OEM quick connections. The High-Performance Auxiliary Radiators work in conjunction with the rest of the cooling system to reduce temperatures. They not only help keep temperatures in optimal ranges, but prolong the heat soak threshold. There’s nothing worse than having your track session cut short because you need to do a cooldown lap.

Compared to the OEM BMW G8X coolers, the CSF units are a significant upgrade. The TIG welded aluminum tanks are much larger than the OE plastic tanks offering superior strength and fluid volume. A larger 2-row 42mm core increases cooling efficiency and capacity. This high efficiency core uses CSF’s Exclusive B-Tube Technology and latest 5mm fin technology, maximizing airflow and heat dissipation. These 5mm fins significantly increase the heat exchange surface area improving overall cooling efficiency and recovery while still maintaining good airflow.

100% All-Aluminum construction ensures the best performance and durability. The mounting pins and brackets are much stronger and more durable than the OE plastic pod mounting system. In addition, the black finish provides extra protection and offers a stealthy look behind the grilles of your BMW G8X.

In addition, the CSF auxiliary radiators also feature integrated bolt on rock guards to keep the coolers safe. You’ve no doubt heard horror stories about OEM coolers getting punctured and spilling fluids all over the road or track. Now you can feel more confident that your cooling system is safer from road debris.

Because each auxiliary radiator is used for a different system you can elect to replace one at a time. For those looking to further improve the Charge Air Cooling system replace the right side auxiliary radiator. Those looking to improve the engine cooling system should replace the left side.

• Sold Individually – all applications use 2 auxiliary radiators
• Multi-Fit – Fits Both Left & Right Side
• 2-Row – 42mm High-Performance Core Featuring CSF’s Exclusive B-tube Technology
• Ultra Efficient 5mm Tall Fins with a Multi-Louvered Design for Maximum Surface Area Contact
• Tank Volume and Core Size Increased
• 100% All-Aluminum TIG-Welded Construction
• OEM Style “Quick Connect” Inlet/Outlet
• True “Drop-in Fit” Requires No Modifications to Install
• Includes Detachable Rock Guard
• Individually Leak and Pressure Tested
• High-Performance Upgrade Suitable for Professional Racing, Street Performance, or OEM Replacement
• Satin Black Finish for OEM+ Look
• 2 Year Limited Warranty

Applications:

• 2021+ BMW G80 M3 (incl. Competition & CS) – 6MT & ZF8 Auto
• 2021+ BMW G82/G83 M4 (incl. Competition, CSL, & CS) – 6MT & ZF8 Auto
• 2022+ BMW G81 M3 (incl. Competition) – 6MT & ZF8 Auto
• 2022+ BMW G87 M2 (incl. Competition) – 6MT & ZF8 Auto

OEM Part Number:

• BMW: 17 11 8 095 285