DIFFERENTIAL COVER turbo The high-flow muffler reduces backpressure

The high-flow muffler reduces backpressure by 40-60% compared to stock while shaping the exhaust note to eliminate drone

Standard hand tools required

They mount as direct replacements for factory bump stops on trucks and SUVs

The benefit goes beyond just looks—cooler fluid resists thermal breakdown

DIFFERENTIAL COVER turbo The high-flow muffler reduces backpressureThe aFe Pro Series Differential Cover is a heavy duty upgrade for GM Corporate 14 bolt axlesthe backbone of 2500 3500 series trucks, Suburbans, and HD work rigs from the late 1970s through today. If you're hauling heavy or running 37 inch tires on a one ton chassis, your stock cover is a bottleneck this Pro Series piece eliminates entirely. Machined from cast A356 aluminum with deep internal and external fins, the Pro Series adds over 2 quarts of