1972-2013 GM K1500 8.5"-10 Heavy-Duty Aluminum Rear Differential Cover-138051300 LB7 Duramax " Smooth plenum expansion creates signature

Smooth plenum expansion creates signature performance inline-6 appearance

Comes complete with a safety wire provision and a copper washer for a tight seal

and HE400VG / HE451VE turbochargers

With these polished PPE Left and Right Side Cylinder Head Bank Manifolds

Black Powder-Coated Finish with Machined Fins

1972-2013 GM K1500 8.5"-10 Heavy-Duty Aluminum Rear Differential Cover-138051300 LB7 Duramax " Smooth plenum expansion creates signatureKeep your GM rear differential running cool and clean with an upgraded cover from PPE. Made from thick, high quality A356. 0 T6 cast aluminum for strength and optimum heat dissipation. The beefy PPE differential cover is equipped with internal heat sinks and external cooling fins which increase the pans surface area as well as thermal stamina. It keeps your differential oil running within its ideal viscosity range, helping extend differential service