Turtle frog Myobatrachus gouldii Myobatrachidae in Western Australia Mahle Rings GMC Pass 121 2.0L Eng 85 86 Plain Ring Set. MAHLE(R) piston rings are the most technically advanced piston rings in the industry. Driven by OE requirements; reducing friction and ring mass while minimizing engine oil consumption, and providing longer service life. MAHLE piston rings lead the industry for the latest piston ring technology. This Part Fits: Year Make Model Submodel 1985 1986 Buick Skyhawk Custom 1985 1986 Buick Skyhawk Limited 1986 Buick Skyhawk Sport 1985 1986 Cadillac Cimarron Base 1985 1986 Cadillac Cimarron d'Oro 1985 1986 Chevrolet Cavalier Base 1985 1986 Chevrolet Cavalier CL 1985 1986 Chevrolet Cavalier CS 1986 Chevrolet Cavalier RS 1985 Chevrolet Cavalier Type 10 1986 Chevrolet Cavalier Z24 1985 1986 Oldsmobile Firenza Base 1985 Oldsmobile Firenza Brougham LX 1985 Oldsmobile Firenza Brougham SX 1986 Oldsmobile Firenza Cruiser 1985 1986 Oldsmobile Firenza Cruiser LX 1985 Oldsmobile Firenza Cruiser SX 1985 Oldsmobile Firenza ES 1985 Oldsmobile Firenza GT 1986 Oldsmobile Firenza LC 1986 Oldsmobile Firenza LX 1986 Oldsmobile Firenza S 1985 Pontiac J2000 Sunbird Base 1985 Pontiac J2000 Sunbird LE 1986 Pontiac Sunbird SE