The Mahle OE moly ring set is specified for a 4.125 inch bore and lists a 1/16 inch ring and a 3.00 mm plasma moly component with standard tension. It is offered as a complete engine ring set intended for piston sealing during routine rebuilds and repairs. Mahle positions this as an OE-style moly ring option for accurate fitment on engines matching the stated bore and ring dimensions.
Mahle Rings 4.125in Bore 1/16in 3.00MM Plasma Moly Ductile Std Tension Engine Set Moly Ring Set