Mahle OE GM 6.0L 05-09 Vin U Reduced Compression Piston Set (Set of 8)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. This Part Fits: Year Make Model Submodel 2007 2009 Chevrolet Avalanche LT 2007 2009 Chevrolet Avalanche LTZ 2006 2018 Chevrolet Express 2500 Base 2006 2018 Chevrolet