Mahle Rings GMC Pass 173 2.8L Eng 87-89 189 3.1L Eng 88-93 GMC Trk 189 3.1L Moly Ring Set

If you're rebuilding the engine in a variety of GM vehicles from the late 80s and early 90s, these Mahle Moly Piston Rings are a solid option. They're designed for engines like the 2.8L and 3.1L found in popular models such as the Chevrolet Corsica, Pontiac Grand Prix, and Buick Century. Piston rings are critical for sealing the combustion chamber, controlling oil consumption, and transferring heat, so using well-made replacements is key to a healthy engine rebuild.

Mahle engineers these rings with a focus on reducing friction and minimizing oil burning, which helps extend the life of your engine. The moly coating on these rings is a notable feature; it helps with initial seating and provides a durable surface that can handle the demands of daily driving. This particular set is 0.060 inch oversize, meaning it's intended for cylinders that have been bored out to match this size during an engine rebuild.