Dart LS Iron Block - 9.240/4.125 w/ Steel Main Caps SR42603A-SFI BMR's polyurethane differential bushings (BK029)

BMR's polyurethane differential bushings (BK029) drastically increase differential stability over the factory rubber bushings

pilot bearing

(each) / 7

Breathable fabrics

Vehicle Applications: 2007-2018 Chevrolet Silverado 1500

Dart LS Iron Block - 9.240/4.125 w/ Steel Main Caps SR42603A-SFI BMR's polyurethane differential bushings (BK029)Product Description: Engine LS Next Bare Block 4. 125 in Bore 9. 240 Deck 4 Bolt Mains 1 Piece Seal 0. 375 in Extended Cylinders Iron GM LS Series Sold Individually Since 1981, Dart Machinery has become the acknowledged leader in producing race winning components. Dart Machinery aluminum and cast iron engine blocks are designed to meet the specialized needs of racers and performance enthusiasts. Dart components are developed in house, manufactured on