Mahle Rings Dodge Trk 238 3.9L Eng 86 91 Plain Ring Set Free Calendar Template 2026 Printable. 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 1988 1991 Dodge B150 Base 1988 1991 Dodge B250 Base 1988 1989 Dodge D100 Custom 1988 1991 Dodge D150 Base 1990 1991 Dodge D150 S 1988 1991 Dodge D250 Base 1987 1991 Dodge Dakota Base 1987 1991 Dodge Dakota LE 1990 1991 Dodge Dakota S 1987 1991 Dodge Dakota SE 1989 Dodge Dakota Shelby 1988 1991 Dodge Dakota Sport 1989 Dodge W100 Custom 1989 1991 Dodge W150 Base 1990 1991 Dodge W150 S