MAHLE/Perfect Circle Piston RingsMAHLE Original/Perfect Circle piston rings lead the way in ring technology and innovation for the Aftermarket – after all, MAHLE is the largest manufacturer of piston rings in the world. MAHLE Original/Perfect Circle rings are at the forefront of light vehicle piston ring technology. Extensive OE connections mean that MAHLE Original/Perfect Circle rings have the technological edge. Things like the CP-20™ oil ring, narrow compression rings, steel compression rings for gasoline engines, low-tension oil rings and coated compression rings for diesels all came from the OE. The MAHLE Original/Perfect Circle performance line proves time and again that it should be the ring of choice under every hood - regardless of the application.
GM Trk 4.8L & 5.3L - 1999-02. Bore size: 3.780" Top ring: 1.50mm carbon steel with plasma-moly facing Second ring: 1.50mm cast Oil ring: 3.00mm Stainless shallow groove.
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