Heavy Duty Cast Aluminum Rear Differential Cover GM/Ram 2500/3500 HD Brushed PPE Diesel - 238051010 2004-gmc-sierra-2500-esi5950911 then you need a PPE

then you need a PPE Viton O-Ring Sealed Filter Spacer Block to properly place the filter/pick up further down into the fluid

1-ply heat-resistant internal fibers

Replaces stock pressure relief valve

Transmission Cooler Bar and Plate 2006-2010 GM 6

more is always better when it comes to transmission fluid

Heavy Duty Cast Aluminum Rear Differential Cover GM/Ram 2500/3500 HD Brushed PPE Diesel - 238051010 2004-gmc-sierra-2500-esi5950911 then you need a PPEMade in the USA from high quality cast aluminum for strength and optimum heat dissipation. PPEs differential covers offer industry leading fluid cooling. Equipped with internal heat sinks and external cooling fins, increasing the pans surface area helping dissipate heat. This makes for a much cooler and denser oil. Cool, dense fluid lubricates better, which will extend differential service life. To keep the fluid clean, PPE installed its exclusive