Mahle OE AMC Jeep 150 2.46L Eng 1983-93 242 4.0L Eng 1983-98 .020 Piston Set (Set of 4)

This Mahle OE piston set gives you four cast pistons, ready to go into your 1987-1995 Jeep Cherokee, Comanche, Grand Cherokee, Wagoneer, or Wrangler. These pistons are .020 inch undersize, meaning they are slightly smaller than the standard bore size to account for wear or for a rebuild to a specific tolerance. Mahle is a major OE supplier, so you're getting parts that match the original equipment specifications.

What you get in this box are pistons with the rings already mounted, along with the necessary piston pins and clips. This makes the assembly process more straightforward for the engine builder. The pistons feature expansion-controlled designs, which help reduce engine noise and wear by maintaining small, consistent clearances as the engine heats up. They also have compensated ring grooves to ensure proper ring loading and effective oil control, which is key for engine health and emissions.