The Carrillo two-piece oil ring is specified for a 4.035-inch bore and 3.0mm ring width, supplied as a single ring unit for diesel applications per the description. Intended for piston ring replacement or engine rebuild tasks, this two-piece oil ring conforms to the stated bore and width dimensions for the supported engine service.
Carrillo Oil Ring 2 Piece Diesel 4.035 Bore 3.0mm *Single Ring*