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The Mahle Plain Ring Set is a performance Napier THM-13 plain ring kit specified as 4.105 x 1.0MM with 136in RW sizing. Supplied as a set for piston ring replacement, this Mahle OE offering targets rebuilds or performance engine work where exact ring dimensions and plain-ring construction are required. Made to Mahle OE sizing specifications, the set helps ensure accurate ring seating during engine assembly.
Mahle Rings Performance Napier THM-13 4.105 x 1.0MM 136in RW Plain Ring Set
