CSF BMW G2X M340i/M440i & G42 M240i High-Performance Engine Oil Cooler

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. Features 8mm Tall Multi-Louvered Fin Made with CSF's AC Condenser Technology Using a 1-Row Super-High Pressure 32mm 10-Channel Microtube for Optimal Oil Flow and Maximum Surface Area Contact Utilizes OEM Top/Bottom Rubber Seals for Optimal Airflow OEM Style Inlet/Outlet Connections Includes Rock Guard Drop-in Fit Install 2-Year Limited Warranty Ideal for Road Racing, Drag Racing, and Vehicles With Increased Performance Fitments Year Range Make Chassis Code Model Trim Engine / Trans / Etc Notes 2023-2026 BMW G42 M240i - Turbocharged 3.0L L6 See Fitments 2022-2026 BMW G42 M240i xDrive - Turbocharged 3.0L L6 See Fitments 2020-2024 BMW G20 M340i - Turbocharged 3.0L L6 See Fitments 2020-2024 BMW G20 M340i xDrive - Turbocharged 3.0L L6 See Fitments 2021-2024 BMW G22/G23 M440i - Turbocharged 3.0L L6 See Fitments 2022-2024 BMW G26 M440i Gran Coupe - Turbocharged 3.0L L6 See Fitments 2021-2024 BMW G22/G23 M440i xDrive - Turbocharged 3.0L L6 See Fitments 2022-2024 BMW G26 M440i xDrive Gran Coupe - Turbocharged 3.0L L6 See Fitments ⚠ Fitment Notes Only fits G2X models with the BMW B58D Motor. If your M340i or M440i has the B58N Motor, the Engine Oil Cooler was not available. Please check your VIN to be sure you have the S33TA Motorsport Engineering Package and B58D motor. You will need to drill out the two rivet nuts to remove the two oil cooler bash guards. CSF supplies new threaded M6 rivet nuts and M6 bolts to secure the bash guards upon installation of the CSF oil cooler.