BRAND NEW STANDARD Sized Set of 8 Pistons with Factory Installed Rings Included Why waste money on some no-name Asian knock-off brand piston when you can have real OEM Quality, for near the same price?? Compatible with 2006-2010 LMM LLY LBZ Duramax Diesel Engines with chassis VIN Code "6", "2" or "D" (as 8th Character in VIN#).This is a complete set of 8 Pistons with Pre-Installed Premium Rings and including Wrist Pins & Pin Clips. Pistons Feature: 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 Piston Rings: 1. All three rings that MCLEVITE 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 to CLEVITE. These rings have been improved further by adding a nitrite coating & a chrome finish.