MAHLE 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 is one of the largest OE piston manufacturers in the world. Highest quality OE replacement pistons available - MAHLE replacement pistons are precision machined to very tight tolerances; designed with OE form, fit, and function Lightweight design for reduced reciprocating mass without sacrificing reliability; reducing bearing loads, offering smoother engine running, and improving engine response MAHLE proprietary GRAFAL (graphite impregnated resin) anti-friction skirt coating reduces drag, scuffing, friction, and cylinder bore wear The development and production of pistons and piston systems are core competencies of MAHLE; based on international development work and high-end engineering, state of the art methods have been used to create piston assemblies Brand MAHLE Model PISTON Exterior Machined Item Weight 1.55 pounds Manufacturer MAHLE Item model number S224-3898 Package Dimensions 4.38 x 4 x 4 inches Manufacturer Part Number S224-3898