CSF 8266 High Performance Engine Oil Cooler for Select BMW M2/M3/M4 2021-2025

Fits select 2021-2025 BMW M2, M3, and M4 (G87, G80, G81, G82, G83). This includes Base, Competition, CS, and CSL trims.

The CSF 8266 High Performance Engine Oil Cooler is a critical upgrade for the G8X platform, specifically designed to address heat management and protection. Utilizing CSF's advanced AC Condenser Technology, this unit features a 1-row, super-high pressure 32mm 10-channel microtube core. This design maximizes surface area contact and optimizes oil flow compared to the factory unit, making it an essential component for high-output builds, drag racing, and track-day reliability.

A standout feature is the integrated heavy-duty rock guard. Because the factory oil cooler sits low and exposed, road debris frequently causes punctures that lead to catastrophic engine failure. This CSF cooler provides peace of mind with added physical protection without sacrificing airflow. The unit is a true drop-in replacement, utilizing OEM top and bottom rubber seals and factory style inlet/outlet connections for a perfect fit with no modifications required.

• Manufacturer Part Number: 8266
• 1-Row 32mm 10-channel microtube core for maximum heat rejection
• 8mm tall multi-louvered fins (increased from 6mm OEM spec)
• Integrated rock guard protects core from road and track debris
• Compatible with factory ducting and shrouds
• Utilizes OEM style quick-connect inlet/outlet ports
• Drop-in fitment requires no vehicle modification
• 2-Year Limited Warranty