BRAND NEW +.020" (+.50MM) Size Set of 8 Pistons with Factory Installed Rings Included. Compatible with 2010-2016 LML Duramax Diesel Engines with chassis VIN Code "8" ("8" as 8th Character in VIN#). This is a complete set of 8 Pistons with Pre-Installed Premium for MAHLE Rings and including Wrist Pins & Pin Clips. Pistons Features: 1. Ni-resist top grooves to control groove wear. 2. Balanced Set of 8 for smooth engine operation. 3. Eutectic aluminum Piston material is chosen because it bonds better with the ring land or ring groove inserts used to strengthen and better support the piston. Piston Pins 1. High strength steel 2. Case hardened for MAHLE Piston Rings: 1. All three rings that for MAHLE/CLEVITE uses on their aftermarket loaded pistons are truly unique and are without a doubt, these ring-sets the absolute best in the business. The top rings are high strength steel with high velocity Moly impregnation. They are an ideal mix of metals because the steel provides superior durability while the Moly facing provides a hard surface that allows superior compression sealing. 4. The second ring (middle of piston) is your second line of defense for sealing compression from the above and oil from below the piston. The high strength steel composition of this ring is ideally suited for both of these critical purposes. 5. The oil ring (bottom ring) is completely unique for MAHLE CLEVITE. These rings have been improved further by adding a nitrite coating & a chrome finish.