An industry-leading reputation and overwhelming success with BMW cooling has made CSF the #1 cooling choice for the B58 powered G2X M340i/M440i and G42 M240i. CSF continues to lead the way in G2X/G42 cooling, adding another product to the best selling B58 cooling suite.
With many motorsports teams and race enthusiasts now pushing over 1000 horsepower, the B58 is seeing oil temperatures well above normal. Once oil temperatures pass a safe limit, the G2X/G42 will go into limp mode. Needless to say, this can ruin a race, track session, or your overall driving fun in general. CSF is here to keep your B58 running at peak performance.
Design & Engineering
When designing this new cooler, CSF wanted to ensure the best possible performance with factory-like fitment. This oil cooler is a truly unique design using CSF's AC Condenser Technology. The 1-Row Super-High Pressure 32mm 10-Channel Microtube provides optimal oil flow and maximum surface area contact.
CSF vs OEM
The CSF Oil Cooler utilizes a Super-High Pressure Microtube core which offers superior cooling performance over the traditional tube and fin design of the OE unit. The core volume was increased by 14% by increasing the core thickness from 28mm to 32mm.
| Feature |
CSF #8372 |
OEM: 17-21-8-666-121 |
| Core Thickness |
32mm |
28mm |
| Core Material |
Aluminum |
Aluminum |
| Core Design |
Super-High Pressure Microtube |
Tube & Fin |
| Construction |
Robot Welded |
Brazed |
By keeping the factory mounting location and relative dimensions, the factory ducting and shrouds are all reused with no modifications necessary. In addition, CSF added a rock guard to keep the cooler safe. You've no doubt heard horror stories about an OEM cooler getting punctured and spilling oil all over the road or track. Now you can feel safer and more confident that your oil system is protected from road debris.
Test Fitting at CarBahn
CSF's development partners at CarBahn installed and tested the first production oil cooler on their own G20 M340i.
