Multiple U.S. Warehouse LocationsBroken ApexFree shipping on qualified orders over $100*
The Mahle OE plain piston ring set (Napier THM-13) sized 4.045 x .043in with .135RW is a standard replacement kit for piston rebuilds. These plain rings restore the piston-to-cylinder sealing surface and are supplied as a matched set to simplify ring changes during an engine overhaul when this precise diameter and rail width are specified.
Mahle Rings Performance Steel Napier THM-13 4.045 x .043in .135RW Plain Ring Set
