2176887 (often labeled as 2176887PE) is the original PACCAR crankcase breather filter kit (Crankcase Breather Filter Kit/CCV/OCV), designed for MX11 and MX13 diesel engines. It is used in heavy commercial vehicles such as Kenworth, Peterbilt, and DAF, and its main function is to purify the exhaust gases from the crankcase and protect the engine and emission system.
