CSF 11-16 BMW 135i(X) 5 Door F20 / M135i(X) 3 Door F21 Race-Spec Oil Cooler

Protect your high-performance BMW's turbocharged engine with this race-specification oil cooler engineered for 2011-2016 135i/135ix (F20 5-door) and M135i/M135ix (F21 3-door) models. Purpose-built to handle the extreme oil temperature demands of N55 turbocharged inline-six engines producing up to 320 horsepower, this oil cooler features CSF's advanced bar-and-plate core construction delivering superior heat transfer efficiency compared to factory designs. The robust aluminum core significantly increases oil cooling capacity, essential for maintaining optimal oil temperatures during track racing, aggressive tuning, and spirited street driving. Military-grade aluminum construction with precision TIG welding ensures exceptional durability and leak-free performance under demanding conditions. Optimized core design maximizes heat dissipation while minimizing pressure drop for consistent oil flow and engine protection. CNC-machined AN fittings provide professional-grade plumbing connections for reliable installations.

Essential upgrade for stage 2+ tuned 135i and M135i models producing 400+ horsepower experiencing high oil temps. Prevents engine damage from oil breakdown during extended track sessions, autocross, and aggressive driving. Perfect for turbocharged builds with upgraded turbos, intercoolers, and custom tuning pushing serious boost. Maintains optimal oil temperatures for maximum engine protection and consistent performance lap after lap. Critical for preserving expensive N55 engines during competitive motorsports and spirited driving applications. Eliminates oil temperature concerns during track days, time attack events, and canyon runs. Professional-grade cooling solution trusted by BMW tuning specialists and European hot hatch enthusiasts. Protects your investment in these rare and increasingly collectible turbocharged BMW hatchbacks while ensuring reliable high-RPM operation during the most demanding driving conditions.