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CSF BMW G8X M3/M4/M2 High-Performance Auxiliary Radiator - Single Radiator

by CSF
Save 7% Save 7%
Original price $519.00
Original price $519.00 - Original price $519.00
Original price $519.00
Current price $485.00
$485.00 - $485.00
Current price $485.00

Compared to the OEM 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.

  • New "Track-Spec" 5mm Tall Ultra Efficient Fins with a Multi-Louvered Design for Maximum Surface Area Contact and Heat Dissipation
  • High-Performance Upgrade Suitable for Professional Racing, Street Performance, or OEM Replacement
  • 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
  • 2 Year Limited Warranty

This Part Fits:

Year Make Model Submodel
2024-2025 BMW M3 Competition xDrive
2024 BMW M3 CS
2021-2026 BMW M4 Base
2021-2026 BMW M4 Competition
2022-2026 BMW M4 Competition xDrive
2025 BMW M4 CS
2023 BMW M4 CSL

Processing & Shipping Overview

Processing occurs before shipping.

Most in-stock items typically process within 2–3 business days before shipment or pickup. Expedited shipping options affect transit time after an order ships and do not speed up processing.

Made-to-order, special-order, vendor drop-ship, and freight items require additional processing time before shipping. Any extended lead times will be noted on the product page when applicable.

For the most up-to-date order status or lead time questions, please contact sales@smgspeed.com or use live chat during business hours.



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