The original OE oil cooler from BMW is an all metal design which would make you think it would be fairly robust. However, there are several weak spots in the design that tend to cause leaks. The CSF Race-Spec design reinforces the weak points, especially around the feed and return lines. CSF's solid line connection block can handle any abuse thrown at it while the reinforced and braced return tube is rock solid. CSF also upgraded the more fragile Tub/Fin core to a robust and durable Bar/Plate design. The core is 40% larger than the factory unit with 2 additional rows of oil cooling and much thicker core (63mm vs OE 45mm). This offers superior cooling capacity and volume for the oil system. TIG welded end tanks round out the slew of upgrades creating a much stronger connection than the factory brazed construction.
Features and Benefits
High Efficiency & Rugged Durability Bar/Plate Design
CNC Machined Mounting Brackets and OEM Style Inlet/Outlet Connection
Requires minor trimming of the plastic shroud to install (instructions included)
Individually Leak and Pressure Tested
2-Year Limited Warranty
"Aero-Flow" Bar Lightweight Construction for Strength and Maximum Flow
Cast End Tanks with 100% Tig Welded Construction
Satin Black Finish for Extreme Protection Against Corrosion and Debris
