Duramax PowerPak Piston Set 4.055 Bore 6.6L - 930036055

Piston and Ring - PowerPak - Cast - Dish - 4.055 in Bore - 1.951 in Compression Height - 3.0 x 2.0 x 3.0 mm Ring Groove - Minus 40.70 cc - GM Duramax - Kit