BRAND NEW Matched and Balanced set of 6 Pistons (no rings included). Made by the OEM (Original Equipment Manufacturer) compatible with Cummins. FITS: VIN Codes: C (2004.5-2008) 5.9 Liter 6BT 24 Valve I6 Turbo Diesel Engines VIN code: C (8th character of VIN#) THIS LISTING IS FOR 6 STANDARD PISTONS Please pay close attention to the Combustion Bowls in the Top Center of the Pistons. (see pictures) They MUST MATCH the bowls in your pistons This is a complete set for one Piston, with Clips and Wrist Pin. Pistons 1. Ni-resist top grooves to control groove wear. 2. Balanced Set of 6 for smooth engine operation. 3. The M124 Piston material (used in these pistons) is a highly evolved Eutectic material, which contains approximately 12% silicon for excellent strength and excellent thermal expansion properties. For diesel engines, the Eutectic material is chosen because it bonds better with the ring land or ring groove inserts used to strengthen and better support the piston rings in high performance/ high load diesel applications. The Eutectic material with hardened ring groove inserts make a better piston than a forged material which does not hold the insert very well. Piston Pins 1. High strength steels meet structural requirements to prevent pin breakage or deflection. 2. Case hardened to provide long lasting wear surfaces. 3. A high degree of dimensional and surface finish control are the final requirements for strength and long life.