BMW M3 Front Mount Heat Exchanger - CSF - High-Performance Front Mount, 2-Row 42mm Core (B-Tube), Includes Black Rock Guards - Polished Aluminum - `21-`27
BMW M3 Front Mount Heat Exchanger - CSF - High-Performance Front Mount, 2-Row 42mm Core (B-Tube), Includes Black Rock Guards - Polished Aluminum - `21-`27
Available Options
Drive now, Pay later with Affirm
or with PayPal
Both options will be available upon checkout.
BMW M3 Front Mount Heat Exchanger - CSF. A high-performance polished aluminum upgrade for '21-'27 M3 featuring a 2-row 42mm B-Tube core and included black rock guards.
Built to increase system volume and heat rejection over the factory single-row unit, this front mount helps reduce IATs with faster heat-soak recovery while improving airflow to the radiator behind it. It drops into the OEM location using CNC machined brackets and OEM-style quick-connects. Fully TIG-welded, 100% aluminum, hand-polished, and track-tested for 100+ hours. Compatible with manual and ZF8 automatic; kit includes rock guards and transmission cooler provisions where applicable.
Features
- 2-row 42mm B-Tube core with multi-louvered fins
- Plug-and-play drop-in fit with OEM quick-connects
- Includes black rock guards; transmission cooler mount
- 100% aluminum, TIG-welded, polished; track-validated
Questions about fitment or install? Call our Austin, TX and Los Angeles, CA teams; we offer installation and customization: 512-982-9393 (TX), 562-981-6800 (CA).
Buying multiple items? Contact us for shipping discounts. We install on premises at both locations.
CA Residents: 
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Need Assistance?
We're here to help!
Call us at 512-982-9393 (Austin, TX) or
562-981-6800 (Signal Hill, CA)
and get assistance from one of our sales team members!
Product ID Number: