Description
Upgrade your BMW G8X M3, M4, or M2 with the CSF Part Number 8321 high-performance auxiliary radiator, engineered to deliver superior cooling efficiency and durability. Featuring TIG-welded all-aluminum construction, this radiator offers increased tank volume and a larger 2-row, 42mm high-performance core that significantly enhances heat dissipation and fluid capacity. The core utilizes CSF’s exclusive B-Tube Technology combined with advanced 5mm tall fins arranged in a multi-louvered design, maximizing airflow and surface contact for optimal thermal management. This innovative configuration improves heat exchange, ensuring your engine stays cool during demanding driving conditions or high-performance applications. The radiator is designed as a true “Drop-in Fit,” requiring no modifications for installation, and it fits both the left and right sides of the OEM mounting points. Its OEM-style quick connect inlet and outlet simplify installation, making it accessible for professional mechanics and experienced enthusiasts alike. Each unit undergoes individual leak and pressure testing to guarantee quality and reliability, and the satin black finish offers an OEM+ aesthetic that complements your vehicle’s appearance. The package includes a detachable rock guard for added protection. Whether for street performance, track use, or OEM replacement, this radiator provides a robust upgrade to support your vehicle’s cooling demands. Backed by a two-year limited warranty, the CSF 8321 radiator is a proven solution for maximizing engine performance and longevity in your BMW G8X series vehicle.
Features:
- High-Performance Upgrade Suitable for Professional Racing, Street Performance, or OEM Replacement
- Ultra Efficient 5mm Tall Fins with a Multi-Louvered Design for Maximum Surface Area Contact
- 2-Row – 42mm High-Performance Core Featuring CSF’s Exclusive B-tube Technology
- Sold Individually – all applications use 2 auxiliary radiators
- True “Drop-in Fit” Requires No Modifications to Install
- 100% All-Aluminum TIG-Welded Construction
- Multi-Fit – Fits Both Left & Right Side
- OEM Style “Quick Connect” Inlet/Outlet
- Individually Leak and Pressure Tested
- Tank Volume and Core Size Increased
- Satin Black Finish for OEM+ Look
- Includes Detachable Rock Guard
- Backed by a 2 Year Limited Warranty



























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