Located directly above the cylinder head, a valve cover is a critical component that prevents oil from escaping through the top of an engine. Oil keeps temperatures down and reduces friction between ...

Modern engine bays are filled with black plastic where bright cast aluminum once sat, and few parts symbolize that shift more clearly than valve covers. Automakers have largely traded metal for molded ...

Corrosion-free Polyvalves from Kerotest Manufacturing come in standard and full-port design, from 0.5 to 12-in. diameters. The valves are made of medium and high-density polyethylene. Kerotest ...

Getting a valve out of a vehicle isn’t too hard – it’s putting the new one in that requires more care. A typical commercial vehicle air braking system requires, at minimum, around a dozen core ...