Valve seal (valve stem seal) for the Perkins 403-11 / 403D-11 and Shibaura N844 diesel engine. Direct OEM replacement (U20406140). Prevents oil consumption and blue smoke. Price per piece.
Full gasket set for Perkins 403D-11 and 403C-11 engines (CAT C1.1 / Shibaura S773). Includes crankshaft seal, valve stem seals, copper washers, and O-rings — everything for a complete engine overhaul. Direct OEM replacement (ref. U5LC0021).