Air cooled flat 4 cylinder engine, loosely modeled after those engines of German origin, commonly found in all those early beetles, buses and ghias out there, to say nothing of the dune buggies and sand rails. Nicely detailed with Weber carburetors, most fasteners, nearly 100 objects, but no oil cooler or fan, and no internal pieces. Works great with my transaxle Ver. 2 found elsewhere on this site. This item is available at a lower price on other sites.