Richmond Gear 81-1030-1 Full Differential Spool GM 8.5" 30 SPLINE

Precision Differential Spool maintains correct power distribution to all drive a Richmond Gear is the leading manufacturer of professional quality, high-performance drivetrain products. Our complete line of products ranges from high performance ring-and-pinion sets for serious street and racing applications to torque-hungry manual transmissions and components. Richmond Gear products have been winners both at the Daytona 500 and U.S. Nationals for decades. WINNERS RUN RICHMOND! Designed for compatibility with OEM-specified gear oil viscosities, ensuring correct lubrication under all operating conditions. Heat-treated alloy steel construction withstands peak torque demands of loaded commercial trucks, preventing gear tooth fatigue and breakage. OEM-spec gear ratios preserve intended vehicle speed, performance, and fuel economy characteristics. Precision fits to carrier housing bores eliminate shimming uncertainty and simplify installation for experienced drivetrain technicians. Precision-machined gears and tight backlash tolerances ensure smooth power transfer and efficient torque distribution between axles.