Sale

Heating and Cooling Radiators

CSF

8131 B58/B48 68mm 2-Row Heat Exchanger

$749.00 $599.00 Save $150.00

SKU: CSF8131

In Stock
In Stock
Ships by Jul 30
Free Shipping
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The CSF #8131 is a high-performance heat exchanger designed for BMW B58/B48 engines in F3X and F2X chassis.

This upgraded unit features CSF's industry-exclusive 68mm 2-row core with B-Tube technology, which is the world's largest 2-row core available. Its triple-pass flow design ensures water passes through the radiator three times before exiting, resulting in the lowest possible outlet water temperature. The heat exchanger includes a detachable rock guard and is constructed with OEM CNC machined mounting location pins and brackets for a direct plug-and-play installation.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandCSF
Part NumberCSF8131
CategoryHeating and Cooling

Buy with Confidence

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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