MMR BMW N55 Oil Catch Can Kit has been engineered for N55 owners that want to ensure their engines are running at optimum performance, by removing unwanted oil from the PCV (Positive Crankcase Ventilation) system before it can be recirculated back into the intake.

Higher mileage engines and those particularly that utilise direct-injection are known to suffer with sludge and carbon build-up on the backs of the inlet valves, but by removing the deposits through the catch can's filter and separation process, the intake air has less oil in it and therefore a higher ratio of oxygen is burnt, resulting in a cleaner, more reliable and better performing engine. 

Checking the level for any oil removed from the intake system is easy thanks to the integral dipstick. A cap-head bolt mounted in the lower section of the catch can allows for easy draining, or if you prefer, the lower section itself can be easily unscrewed and removed.