Quick view Add to Wishlist MAHLE PISTONS Mahle Pistons GM 6.6L Duramax PowerPak Piston Set 4.075 Bore MAH930029875 Piston and Ring - PowerPak - Cast - 4.075 in Bore - 3.0 x 2.0 x 3.0 mm Ring Groove - Minus 41.80 cc - GM Duramax - Kit MSRP: $2,061.45 $1,899.28 Add to Cart The item has been added Compare