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This Mahle plain ring set is a performance steel Napier THM-13 plain ring pack sized 4.170 inches with a 1.5 mm section and .150 RW detail, supplied for piston rebuilds and engine assembly. Offered as a precision replacement set, these rings suit applications calling for Napier THM-13 dimensions where performance steel sealing rings are required.
Mahle Rings Performance Steel Napier THM-13 4.175 x .1.5MM .150RW Plain Ring Set
