SKU: 27286349001

CSF Cooling - Racing & High Performance Division BMW F8X M3/M4/M2C Auxiliary Radiators w/Rock Guards (Sold Individually Fits Left and Right) 8258

Sale price$202.05 Regular price$224.50
Save 10%

Pay in installments of $56.12 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Sep 4 - Sep 9

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

CSF Cooling - Racing & High Performance Division BMW F8X M3/M4/M2C Auxiliary Radiators w/Rock Guards (Sold Individually Fits Left and Right) 8258Like the other cooling systems on the F8X, the factory auxiliary radiators do a pretty good job in stock form. However, once you start adding a lot of power and pushing the car in aggressive driving conditions, the factory systems start to show its limitations. As more and more owners have pushed the limits of their S55, CSF saw the need and demand. The F8X platform is also almost a decade old with the newest examples being at least 5 years old. Over

Like the other cooling systems on the F8X, the factory auxiliary radiators do a pretty good job in stock form. However, once you start adding a lot of power and pushing the car in aggressive driving conditions, the factory systems start to show its limitations. As more and more owners have pushed the limits of their S55, CSF saw the need and demand. The F8X platform is also almost a decade old with the newest examples being at least 5 years old. Over time the original coolers end up with damaged or clogged fins that greatly reduce their cooling capacity.

CSF designed the coolers to be a true "Drop-in Fit" for easy installation. 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 F8X coolers, the CSF units are a significant upgrade. CSF eliminated the OE plastic mounting pod by incorporating it into the modular design that fits both sides. This design improvement increases the size of both the core and tanks. The extra space taken from the mounting pod allowed for a ~7% increase in Core Size and an ~10% increase in Tank Volume. With a larger 2-row 42mm core, cooling efficiency and capacity are drastically increased. The high efficiency core using CSF's Exclusive B-Tube Technology maximizes airflow and heat dissipation. 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 F8X. 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.

Features

  • Sold Individually - all applications require 2 auxiliary radiators
  • CSF, The Cooling Experts, have been serving the US aftermarket for almost 4 decades. With over 30 million units sold, CSF is your exclusive source for Radiators, Condensers, Intercoolers, Inverter Coolers, Racing Radiators and Pressure Caps.
  • 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
  • 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
  • Shipping Notes
    • Free Standard Shipping on $100+ Orders to the USA.
    • Except Preorder products are shipped in 48 hours.
    • Delivery to the USA:
    1. Standard Shipping : 3-10 business days
    • If time is of the essence, please consider selecting expedited delivery for faster service.
    Exchange/Return Notes
    • We offer a 30-day return/exchange service after receiving.
    • Final sale items are not eligible for returns or exchanges.
    • To process your return/exchange, please contact us at [email protected]
    • Please click here for more details>>> Return & Exchange Policy
    SKU: 27286349001

    Discover Niche Categories That Outsell

    Top-Converting Item to Boost Your Average Order

    4.1 ★★★★★
    Based on 20 reviews
    Sort
    Highest Rating
    Newest First
    Oldest First
    Product Reviews
    D
    Verified Purchase
    Dave H.
    Charlottesville, US
    ★★★★★ 5
    Easy to DIY
    Use YouTube to see how to easily replace these two filters. Honda wanted $130 to replace them. I saved more than $100 buying them and doing it myself in about 5 minutes total time.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on May 28, 2026
    D
    Verified Purchase
    Derf Reese
    Massapequa, US
    ★★★★★ 5
    Good purchase.
    Great product and value. I will always reach for these.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on May 24, 2026
    T
    Verified Purchase
    theresa volk
    Lexington, US
    ★★★★★ 5
    Easy to install
    Fit my Honda crv hybrid perfectly
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on May 20, 2026
    A
    Verified Purchase
    Alex F Campodonico
    Battle Creek, US
    ★★★★★ 5
    Great replacement
    Fits perfectly. A fraction of the cost what the dealership would charge. I compared the original to this one and they are basically the same
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on February 24, 2026
    G
    Verified Purchase
    Gwynbleidd
    Lake Worth, US
    ★★★★★ 5
    Fit my 23 CRV hybrid does the job
    Fit my 23 CRV hybrid does the job
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on March 2, 2026

    recommand products