MAHLE Original pistons are OE quality and have the same great OE features such as compensated ring grooves to assure proper ring loading and oil control, as well as expansion controlled designs for small fitting clearances to reduce engine noise, wear, emissions, and improve oil control. MAHLE offers pistons ready for installation with mounted piston rings, with pin and clips included for the convenience of the engine builder. PartNumber : mhl2243525WR Description : Engine Piston Set w/Rings Piston oversize : Standard Piston Item Grade : OE Replacement With Piston Rings : Yes Bowl Volume (cubic cm) : 43.2 1991 Dodge D250 Base L6.-cc Engine Components::Piston Sets - Diesel 1991 Dodge D350 Base L6.-cc Engine Components::Piston Sets - Diesel 1991 Dodge W250 Base L6.-cc Engine Components::Piston Sets - Diesel