CSF High-Performance Engine Oil Cooler – BMW B58 G2X / G42 Platform
The CSF High-Performance Engine Oil Cooler is engineered specifically for BMW’s latest B58-powered platforms, including the G20 M340i, G22/G26 M440i, and G42 M240i. Designed to replace the factory oil cooler, this unit significantly improves thermal stability under demanding driving conditions.
Modern B58 engines generate high oil temperatures during spirited driving, tuning, or track use. Once oil temps exceed safe thresholds, the ECU may reduce power or enter limp mode. The CSF upgraded cooler helps prevent this by increasing cooling efficiency and maintaining consistent oil temperatures.
Key Features
Direct-fit replacement for factory BMW oil cooler
Designed for BMW B58 G2X / G42 platforms
Super High-Pressure Microtube core technology
Increased 32mm core thickness (vs OEM 28mm)
Approximately 14% larger cooling capacity than stock
AC condenser-style high-efficiency design
OEM-style mounting and connections
Includes rock guard for debris protection
Retains factory ducting and shrouds
Drop-in installation (no major modifications required)
2-year limited warranty
Fitment
BMW G20 / G2X
- M340i / M340i xDrive (2020–2024)
BMW G22 / G26
- M440i / M440i xDrive (2021–2024)
BMW G42
- M240i / M240i xDrive (2022–2026)
Fits B58D engine only. VIN verification recommended.
Performance Benefits
- Lower engine oil temperatures under load
- Improved heat management for tuned vehicles
- Reduced risk of limp mode during track driving
- More stable oil temps in hot climates (Florida-ready)
- Better long-term engine protection under stress
Engineering Advantage
CSF uses a high-efficiency microtube core design derived from motorsport condenser technology. Compared to the OEM tube-and-fin cooler, this design increases surface contact area and flow efficiency, resulting in improved heat rejection without sacrificing fitment.
Ideal For
- Street performance builds
- Stage 1–3 tuned BMW B58 vehicles
- Track days / HPDE
- Hot climate driving
- High-load highway driving
Proposition 65 Warnings.
Cancer and Reproductive Harm. See details below.
Items that are not CARB Legal will not be sold and ship to California or CARB states.
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