CSF BMW F8X M3/M4/M2C Auxiliary Radiators w/ Rock Guards (Fits Left and Right, Sold Individually)

CSF stands out as the top cooling choice for BMW owners, especially those with F8X M3/M4/M2 Competition models. Renowned for their expertise and track record in cooling solutions, CSF introduces the latest addition to the acclaimed F8X Cooling Suite, completing the comprehensive lineup.

Similar to other cooling systems in the F8X series, the factory auxiliary radiators perform adequately in their stock configuration. However, when you begin to enhance power and drive the car aggressively, the limitations of the factory setup become apparent. With many owners pushing the boundaries of their S55 engines, CSF recognized the growing demand for improved cooling solutions. Additionally, given that the F8X platform is nearly a decade old, with newer examples being at least 5 years old, the original coolers may suffer from damaged or clogged fins over time, significantly compromising their cooling efficiency.

Compared to the OEM F8X coolers, the CSF units represent a significant upgrade. CSF has enhanced the design by integrating the OE plastic mounting pod into a modular structure that accommodates both sides. This improvement increases both the core size and tank volume. By reallocating space from the mounting pod, CSF achieved approximately a 7% increase in core size and a 10% increase in tank volume. The larger 2-row 42mm core substantially improves cooling efficiency and capacity. Utilizing CSF's Exclusive B-Tube Technology, the high-efficiency core maximizes airflow and heat dissipation. Constructed with 100% all-aluminum, these radiators ensure optimal performance and durability. The mounting pins and brackets are significantly stronger and more durable compared to the OE plastic pod mounting system. Additionally, the black finish offers extra protection and provides a stealthy appearance behind the grilles of your F8X.

Moreover, the CSF auxiliary radiators feature integrated bolt-on rock guards, enhancing safety for the coolers. You may have heard of incidents where OEM coolers were punctured, resulting in fluid spillage on the road or track. With the integrated rock guards, you can have greater confidence in the safety of your cooling system, knowing it's better protected against road debris.

• Sold Individually – all applications require 2 auxiliary radiators
• Multi-Fit – Fits Both Left & Right Side
• 2-Row 42mm High-Performance Core Featuring CSF’s B-Tube Technology
• Ultra Efficient 6.5mm Tall Fins with a Multi-Louvered Design for Maximum Surface Area Contact
• Tank Volume increased by 10% and Core Size Increased by 6.4%
• 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:
  • 2015-2018 BMW F80 M3 (incl. CS & Competition)
  • 2015-2020 BMW F82/F83 M4 (incl. CS, GTS, & Competition)
  • 2019-2021 BMW F87 M2 Competition (incl. CS)