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Mahle OE plain ring set for a 4.060-inch bore with 1.5MM and .151 RW is a piston ring replacement intended for engine rebuilds to restore compression and oil control. Sized to Napier THM specifications, this plain ring set is supplied for use in engines matching the stated bore and ring dimensions and is suitable for machinists and rebuild projects requiring OEM-style ring replacements.
Mahle Rings Steel Napier THM 4.060 x 1.5MM .151 RW Plain Ring Set
