Motive Gear GM10-373 Differential Ring & Pinion Set – Enhance the performance of your GM 8.5\"/8.625\" differential with this precision-engineered 3.73 ratio ring and pinion set. Manufactured from premium 8620 steel, this set ensures superior strength, durability, and smooth power transfer. Features & Benefits: Premium Build Quality: Constructed from 8620 steel for maximum durability and reliability. Optimized Gear Ratio: 3.73 ratio improves torque distribution, acceleration, and towing capability. Perfect Fitment: Designed for GM 8.5\"/8.625\" 10-bolt differentials with a 30-spline pinion. OE Replacement: Precision machined for factory-like performance and easy installation. Reliable & Efficient: Reduces noise, improves power transfer, and extends differential lifespan. Applications & Compatibility: Buick: Apollo (1973-1975) Century (1973-1977) Electra (1971-1989) Estate Wagon (1971-1983) LeSabre (1973-1985) Rainier (2004-2007) Regal (1973-1987) Riviera (1975-1978) Skylark (1970-1979) Cadillac: Brougham (1987-1992) DeVille (1977-1984) Escalade (1999-2000) Chevrolet: Blazer (1973-1991) Camaro (1970-2002) Caprice (1971-1996) Chevelle (1970-1977) Corvette (1970-1979) El Camino (1970-1987) Impala (1971-1996) Malibu (1970-1983) Monte Carlo (1970-1988) Silverado 1500 (1988-2006) Tahoe (1995-2000) GMC: Envoy (2002-2009) Jimmy (1973-1991) Sierra 1500 (1988-2006) Yukon (1992-2000) Oldsmobile: 442 (1970-1971) Cutlass (1970-1988) Delta 88 (1971-1985) Vista Cruiser (1970-1975)Pontiac: Bonneville (1971-1981) Firebird (1970-2002) Grand Prix (1970-1987) LeMans (1970-1983) Tempest (1970-1971)Replaces For: GM 12471280, 12479315, 26029128, 26038866 Yukon Gear YG GM8.5-373 Richmond Gear 49-0041-1 EXCEL from Richmond GM85373 Motive Gear G885373, GM10-373A Warranty & Why Choose Motive Gear?Warranty: 1 Year / 50,000 Miles – Ensuring long-lasting performance. Industry-Leading Performance: Trusted brand for premium differential components.Precision Engineering: Designed for smooth operation and enhanced efficiency.