Free up Horsepower - Eliminate Crankcase Pressure with UPR Baffled Billet One-Way Crankcase Breather Kit. This is a direct replacement for the factory oil fill cap that vents unwanted crankcase pressure to the atmosphere and improving overall performance. Incorporating a High-Performance check ball keeping unmetered air from entering the crankcase. The main benefit is that it drives just like stock until you get into BOOST and it releases unwanted crankcase pressure beneath the pistons during the down stroke. Basically, it frees up Horse Power that your engine never had the ability to utilize until installing this UPR Billet One-Way Crankcase Breather. Incorporating 4 internal baffles to control oil. Ideal for all street and race applications to handle engine blow-by and any boost levels.
We have a superior baffling system over any other valve cover breathers proven to deliver the best oil control.
Installs in 5 minutes
THIS PART DOES NOT CARRY AN CARB EO NUMBER, AND THEREFORE IS FOR RACING / OFF ROAD USE ONLY. NOT FOR SALE OR USE IN CALIFORNIA DUE TO CARB/EMISSIONS. ALL CALIFORNIA ORDERS WILL BE CANCELLED AND REFUNDED
Product Features:
» 5 Minute Installation
» CNC Machined Billet Body
» Direct Replacement for Oil Fill Cap
» Releases unwanted crankcase pressure under Boost
» Check Ball prevents unmetered air from entering engine
» CNC Machined Billet Body
» Direct Replacement for Oil Fill Cap
» Releases unwanted crankcase pressure under Boost
» Check Ball prevents unmetered air from entering engine
» Includes two o-ring options to fit either the plastic valve cover or cast valve covers perfectly
Fits These Vehicles:
BMW N54 N55 E6x E8x E9x
MERCEDES 2.0L Engine INIFINITI 2.0L Engine
Check hood clearance as not all BMW and Mercedes models share the same hood line (for instance, it will not clear some 335i hoods). This breather assembly stands 2 3/8" off of the valve cover.
