CSF BMW M3/M4 (G8X) Transmission Oil Cooler w/ Rock Guard

CSF BMW M3/M4 (G8X) Transmission Oil Cooler w/ Rock Guard

Marsoni

M251S

$299.50

Get it in 3 business days with 1 day shipping. Friday, May 29

CSF BMW M3/M4 (G8X) Transmission Oil Cooler w/ Rock GuardThe CSF #8221 Cooling product is designed to be a "Drop In Fit" application. The product will install in the OEM Location with no modifications necessary unless otherwise noted or instructions are included in the product package. Please see the manufacturer repair manual for standard installation instructions. If you do not feel confident installing this product CSF recommends taking it to a qualified installation facility. This Part Fits: Year Make

Easy Shipping

Quick Dispatch:

Your CSF BMW M3/M4 (G8X) Transmission Oil Cooler w/ Rock Guard orders ship within 1-2 business days.

Delivery Options:

Standard: 3-7 business days
Fast: 2-3 business days
Express: 1-2 business days

Order Tracking:

You'll receive a tracking link by email once your CSF BMW M3/M4 (G8X) Transmission Oil Cooler w/ Rock Guard ships.

Need Help?
Questions about CSF BMW M3/M4 (G8X) Transmission Oil Cooler w/ Rock Guard, sizing, or delivery? We're just an email away.

Live Shipping Estimates:
Enter your location at checkout to see available shipping methods and costs for CSF BMW M3/M4 (G8X) Transmission Oil Cooler w/ Rock Guard in your area.

Get Shipping Estimates

Country Zip/Postal Code

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

Easy and perfect fit for 2017 and 2018 Honda CRV with 1.5l engines. You need a Phillips screwdriver to remove the 4 screws holding the airbox. After that you just remove the old one and put the new one in the same orientation and put the screws back on. Helps the engine breathe which can result in slightly more power and mpg. I recommend changing every few years.

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on August 8, 2025

mike R

Waukegan, US

★★★★★ 4

Looks identical to the OEM

Changed this filter in a matter of 3 -4 minutes. The fit and feel seems identical to the Honda OEM filter---feels just as heavy and fit exactly. For $10 it's a bargain. I drove about 20 miles after installing, also with no problems. 4 stars because I want to give a long term report... I will report a few months from now to advise how it held up under North East conditions.

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on September 11, 2023

Verified Purchase

craigerino

Lake Worth, US

★★★★★ 5

3rd purchase very good!

Great filter. Easy install with a Phillips screwdriver. 5 min and an amateur can do it. This is my 3rd purchase and will save so much money vs dealer

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on February 14, 2026

Verified Purchase

Chindee

Lexington, US

★★★★★ 5

Great price and perfect fit.

Fits perfectly in my 2017 Honda Cr-v.

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on January 9, 2026