BMW 1 Series Radiator - CSF - High-Performance All-Aluminum with 2-Row Core and B-Tube Technology - `11-`27
BMW 1 Series Radiator - CSF - High-Performance All-Aluminum with 2-Row Core and B-Tube Technology - `11-`27
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CSF High-Performance All-Aluminum Radiator for BMW 1 Series. This direct-fit 2-row upgrade with B-Tube technology is engineered to keep your 1M, 135i, 335i, and Z4 (A/T only) running cool on the street or at the track.
CSF’s 42 mm dual core uses exclusive B-shaped tubes that increase internal surface area and promote dual laminar flow for improved heat rejection, while ultra-efficient multi-louvered fins maximize airflow through the core. OE-style CNC machined brackets and quick-connect inlet/outlet let you reuse factory hoses, fan shroud, and condenser, with durable all-aluminum construction and a race-style drain plug. Designed as a true drop-in in the OEM location; see fitment notes if your E9X uses BMW 17117788903.
Features
- 2-row 42 mm core with CSF exclusive B-Tube technology
- Multi-louvered fins with 6.5 mm fin height
- CNC machined brackets and quick-connect fittings
- All-aluminum build with smooth satin finish and race-style drain
- Accepts OEM components for straightforward installation
Have questions or planning a build? Call our Austin shop at 512-982-9393 or our Los Angeles area shop at 562-981-6800. We offer installation and customization services at both locations.
Buying multiple items? Contact us for combined shipping discounts. We install on premises at our Austin, TX and Los Angeles, CA locations.
CA Residents: 
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Need Assistance?
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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!
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