Mahle OE Series Cylinder Sleeve Assembly Ring Set for 1984-1989 Porsche 911

MAHLE(R) 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.