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The Carrillo 4.0345-inch top piston ring is a single 1/16" diesel HV 385 ring sized for a 4.0345 bore, intended to restore sealing at the top of a diesel piston. Sold as an individual ring, it provides a direct replacement option during engine rebuilds or repairs when matching precise bore dimensions and original ring specification is required for proper fit and function.
Carrillo 4.0345 Bore 1/16 Diesel HV 385 Top Ring *Single Ring*
