7.25" X 2.5"Round Billet Aluminum Performance Oil Catch Breather Tank+Cap Black Driving System for Mercedes-PKW GL-Class 320 CDI

for Mercedes-PKW GL-Class 320 CDI (W164) 165kw OM642 engine 2005-2009

as well as for an OEM fit

B18A/B and B20 engines

High side or small line thread dimensions measure M20 X 1

2001-2007 GMC Yukon XL 2500

7.25" X 2.5"Round Billet Aluminum Performance Oil Catch Breather Tank+Cap Black Driving System for Mercedes-PKW GL-Class 320 CDIAn oil catch tank can is used in turbo applications, or high performance racing applications where excessive blow by (leakage past the piston rings) of air and fuel vapor occurs. This creates a positive pressure in the crankcase. During engine operation, blow by gases, as well as oil mist from the rotating components of the engine, pass through the PCV valve and are routed back into the intake for the engine to burn off. However, some of the oil mist