Mahle plain ring set, Napier THM-13, sized 4.140 x .043 plain ring set. This listing presents the ring set by its precise dimensions to help buyers match piston and ring sizing for engine rebuilds or stock replacement. The overview sticks to the stated part identity and dimensions so technicians and shops can confirm compatibility when selecting rings for the specified bore and gap.
Mahle Rings Performance Napier THM-13 4.140 x .043 Plain Ring Set