EXCEL GM85342 Differential Ring and Pinion set fit GM 8.5" 8.6" 30 Spline 12T Pinion 41T Ring 3.42 Ratio Compatible for Buick, Cadillac, Chevrolet, GMC Oldsmobile, Replaces USA Standard ZG GM8.5-342

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Management number 219408554 Release Date 2026/05/03 List Price $59.14 Model Number 219408554
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Upgrade your vehicle’s differential performance with the EXCEL from Richmond 3.42 Ratio GM 8.625" Ring & Pinion Gear Set. Built for strength and durability, this high-performance gear set ensures optimal torque transfer and smooth operation for GM 8.5"/8.625" differentials.βš™ Key Features & Benefits:Precision Engineering: 3.42 gear ratio with 41 ring gear teeth and 12 pinion gear teeth for superior torque management.Heavy-Duty Construction: Made from premium 8620 steel for long-lasting durability and high-load performance.OE Fit & Performance: Designed to meet or exceed OEM specifications for a seamless installation.Optimized Power Transfer: 30-spline pinion shaft ensures improved traction and efficiency.Perfect Replacement: Compatible with GM 8.5"/8.625" (10 Bolt) differentials, requiring a 2.73 and numerically higher ratio carrier.πŸš— Applications & Compatibility:Designed for a wide range of GM vehicles, including:Buick: Apollo (1973-1975), Century (1973-1977), Regal (1973-1987), Skylark (1970-1979), Roadmaster (1991-1996), and more.Cadillac: Escalade (1999-2013), Brougham (1987-1992), DeVille (1977-1984), Fleetwood (1977-1996), and more.Chevrolet: Avalanche (2002-2013), Camaro (1970-1981), Caprice (1970-1996), Silverado 1500 (1999-2020), Tahoe (1995-2017), and more.GMC: Sierra 1500 (1999-2020), Yukon (1992-2013), Jimmy (1970-2005), Suburban (1995-2013), and more.Other Brands: Hummer H3 (2006-2010), Isuzu Ascender (2003-2008), Saab 9-7x (2005-2009), and more.πŸ”„ Replaces OEM Part Numbers:SVL: 2020642USA Standard Gear: 36213American Axle & Manufacturing: 40053029Richmond Gear: 49-0278-1Dorman: 697-300Pro-King: 742G730CMotive Gear: G885342, GM10-342, GM10-342ARichmond Gear: SGM8504USA Standard Gear: ZG GM8.5-342πŸ›‘ Warranty & Why Choose Motive Gear?πŸ›‘ 1-Year or 50,000-Mile Warranty: Drive with confidence knowing your investment is protected.βš™ Precision Manufacturing: Engineered with cutting-edge technology to deliver superior performance and longevity.πŸ”§ Reliable Performance: Ensures smooth operation, reduced friction, and enhanced durability for high-performance applications.Upgrade your differential today with the EXCEL from Richmond 3.42 Ratio GM 8.625" Ring & Pinion Gear Set for enhanced performance and long-term reliability!

  • βœ… High-performance 3.42 gear ratio enhances acceleration & towing capacity, perfect for GM 8.5" & 8.625" differentials
  • βœ… Made from premium 8620 steel for maximum durability, strength & extended lifespan under tough driving conditions
  • βœ… Standard rotation ring gear with 10 bolt design ensures precise fit & optimal power transfer for smooth operation.
  • 2βœ… Features 30-spline pinion shaft & 12-tooth pinion gear with a 1.626-inch diameter for improved torque & efficiency
  • βœ… Compatible with various GM, Chevrolet, Cadillac, GMC models, ensuring a perfect OEM fit & easy installation
Brand Excel
Model Ring and Pinion
Exterior Machined
Item Weight 6 pounds
Manufacturer EXCel
OEM Part Number GM85342
Item model number GM85342
Product Dimensions 15 x 11 x 5.25 inches
Manufacturer Part Number GM85342
Is Discontinued By Manufacturer No

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