Two aluminum oil pump housings with covers off showing gerotor r…

Two cast-aluminum oil pump housings sit open on newspaper with their covers removed, exposing the gerotor inner and outer rotors seated around the crankshaft snout bore. The lower unit is oil-wetted with rust staining and brass fittings, while the upper one is dry and shows the cast oil galleries and bolt bosses.

AI caption January 2009 · Photo 101 of 117