Richmond Gear 49-0019-1 Differential Ring & Pinion, For GM 8.5"/8.625" Axles, Ratio 3.23, 10-Bolt, Standard Spline, 41 Pinion & 13 Ring Tooth –Fits GM Cars & Trucks Replaces 12479393, G885323, 697-810

Short Summary: The Richmond Gear 49-0019-1 Ring & Pinion delivers OE-grade strength and reliability for GM 8.5"/8.6" (10-bolt) axles. With a 3.23 gear ratio, it’s precision-engineered for both front and rear applications, making it ideal for restoration, performance, or fleet use.Key FeaturesAxle Fitment: GM 8.5" / 8.625" (10 Bolt)Gear Ratio: 3.23Carrier Requirement: Requires 2.73 & Numerically Higher CarrierApplication: Front and Rear UseDifferential Type: Standard Open or Limited Slip (OEM Style)Prop 65 Warning: Cancer and Reproductive Harm - www.p65warnings.ca.govVehicle CompatibilityCompatible with GM 8.5" / 8.625" 10-Bolt axles found in a wide range of Buick, Cadillac, Chevrolet, GMC, Oldsmobile, Pontiac, Hummer, Isuzu, and Saab vehicles from the 1970s through 2020.Buick1973–1975 Apollo1971–1996 Electra, LeSabre, Regal, Roadmaster, Skylark1984–1987 Regal2004–2007 RainierCadillac1976–2013 Seville, DeVille, Escalade (EXT, ESV), Fleetwood, BroughamChevrolet1970–2020 Camaro, Caprice, Impala, Chevelle, Malibu, Nova, Monte Carlo1987–2006 Blazer, S10, Silverado 1500, SSR, Suburban 1500, Tahoe, Trailblazer1977–1986 C/K10/K20, 1988–1999 C/K1500, V10/V20/V1500/V2500 Suburbans2007–2013 Avalanche1996–2013 Express 1500GMC1970–2020 C/K1500, Sierra 1500, Savana 1500, Yukon, Jimmy, Envoy, Canyon1973–1977 Sprint1992–1993 TyphoonOldsmobile1970–1992 Cutlass (Supreme, Calais, Cruiser, Salon), Delta 88, 98, Omega, Vista Cruiser1971–1972 F85, 442Pontiac1971–1989 Bonneville, Catalina, Firebird, Grand Am, Grand Prix, LeMans, Phoenix, Ventura1971–1972 Laurentian, 1972–1973 GTOOthers2006–2010 Hummer H32009–2010 Hummer H3T2003–2008 Isuzu Ascender2005–2009 Saab 9-7xReplaces OEM & Aftermarket Part NumbersGeneral Motors: 12479393, 19180883, 23114027, 23114030SVL: 2023698Yukon Gear & Axle: 24493USA Standard Gear: 36212American Axle: 40025148, 40049439, 40053035, 40108742Dorman: 697-810Richmond Gear: 82-0376-1, 82-0377-1Motive Gear: G885323Nitro Gear & Axle: GM8.5-323-NGWarranty & Quality AssuranceCovered by a 2-Year / 100,000-Mile Warranty, Richmond Gear ring & pinion sets are manufactured in the USA with high-grade steel and precision machining. Ideal for OE replacements, high-mileage rebuilds, or performance upgrades.

• Built for GM 8.5"/8.625" 10-Bolt axles, this 3.23 ratio Richmond Gear ring & pinion delivers OEM fit and performance in a wide range of GM vehicles from 1970 through 2020—ideal for both restoration and daily driving reliability.
• Engineered with premium-grade materials for long-lasting performance; manufactured using computer-controlled heat treatment and precision machining to reduce wear and noise under load.
• Compatible with both front and rear differentials and requires a 2.73 or numerically higher carrier—perfect for street, towing, or light-duty off-road applications.
• Directly replaces OE part numbers including GM 12479393, 23114027, AAM 40025148, Dorman 697-810, Motive G885323, Yukon 24493, Nitro GM8.5-323-NG, and more for quick and easy fitment.
• Includes Richmond Gear ring gear and pinion gear with a 2-year or 100,000-mile warranty—trusted by performance builders and backed by over 100 years of American gear manufacturing expertise.