Heating and Cooling› Radiators
CSF
CSF BMW F8X M3/M4/M2C Auxiliary Radiators w/ Rock Guards (Sold Individually - Fits Left and Right
SKU: C00B 8258
Easy — 1–2 hours
Description
Part #: 8258
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
- 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
CSF manufactures the most advanced and efficient radiator in the industry for your F8X M3/M4/M2 Comp. CSF uses innovative tube and fin technologies with industry-leading testing methods to maximize airflow and heat dissipation.
MIA's Description
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Specifications
| Brand | CSF |
| Part Number | C00B 8258 |
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Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
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