Motive Gear G975390, Differential Ring & Pinion, For GM 7.5"/7.625", Gear Ratio 3.90, 10-Bolt, 27 Spline, 10 Pinion & 39 Ring Tooth - Fits Buick, Chevrolet, GMC, Pontiac, Replaces GM 3.90 Pro Gear

Short Summary: Upgrade your GM 7.5"/7.625" differential with the Motive Gear G975390 Pro Gear Set. Featuring a 3.90 ratio, this performance-built ring & pinion is ideal for high-horsepower street and strip applications requiring increased torque and durability.Key FeaturesGear Ratio: 3.90Pinion Gear Tooth Count: 10Ring Gear Tooth Count: 39Ring Gear Outside Diameter: 7.5"Pinion Shaft Diameter: 1.438"Pinion Spline Count: 27Cover Bolt Quantity: 10Ring Gear Material: 9310 Forged SteelCarrier Break: 3.23 and higherRing Gear Rotation: StandardVehicle Compatibility For:Buick1973–1975 Apollo - For GM 7.5"/7.625" (10 Bolt); Performance Ring and Pinion; 3.90 Ratio; Pro Gear; Requires a 3.23 and Numerically Higher Ratio Carrier1977–1981 Century - For GM 7.5"/7.625" (10 Bolt); Performance Ring and Pinion; 3.90 Ratio; Pro Gear; Requires a 3.23 and Numerically Higher Ratio Carrier1991–1996 Commercial Chassis - For GM 7.5"/7.625" (10 Bolt); Performance Ring and Pinion; 3.90 Ratio; Pro Gear; Requires a 3.23 and Numerically Higher Ratio Carrier1976–1985 Electra - For GM 7.5"/7.625" (10 Bolt); Performance Ring and Pinion; 3.90 Ratio; Pro Gear; Requires a 3.23 and Numerically Higher Ratio Carrier1977–1983 Estate Wagon - For GM 7.5"/7.625" (10 Bolt); Performance Ring and Pinion; 3.90 Ratio; Pro Gear; Requires a 3.23 and Numerically Higher Ratio Carrier1975–1985 LeSabre - For GM 7.5"/7.625" (10 Bolt); Performance Ring and Pinion; 3.90 Ratio; Pro Gear; Requires a 3.23 and Numerically Higher Ratio Carrier1977–1979 Opel - For GM 7.5"/7.625" (10 Bolt); Performance Ring and Pinion; 3.90 Ratio; Pro Gear; Requires a 3.23 and Numerically Higher Ratio Carrier1977–1987 Regal - For GM 7.5"/7.625" (10 Bolt); Performance Ring and Pinion; 3.90 Ratio; Pro Gear; Requires a 3.23 and Numerically Higher Ratio Carrier1977–1978 Riviera - For GM 7.5"/7.625" (10 Bolt); Performance Ring and Pinion; 3.90 Ratio; Pro Gear; Requires a 3.23 and Numerically Higher Ratio Carrier1991–1996 Roadmaster - For GM 7.5"/7.625" (10 Bolt); Performance Ring and Pinion; 3.90 Ratio; Pro Gear; Requires a 3.23 and Numerically Higher Ratio Carrier1975–1979 Skylark - For GM 7.5"/7.625" (10 Bolt); Performance Ring and Pinion; 3.90 Ratio; Pro Gear; Requires a 3.23 and Numerically Higher Ratio CarrierCadillac1987–1990 Brougham - For GM 7.5"/7.625" (10 Bolt); Performance Ring and Pinion; 3.90 Ratio; Pro Gear; Requires a 3.23 and Numerically Higher Ratio Carrier1982–1984 DeVille - For GM 7.5"/7.625" (10 Bolt); Performance Ring and Pinion; 3.90 Ratio; Pro Gear; Requires a 3.23 and Numerically Higher Ratio Carrier1982–1990 Fleetwood - For GM 7.5"/7.625" (10 Bolt); Performance Ring and Pinion; 3.90 Ratio; Pro Gear; Requires a 3.23 and Numerically Higher Ratio CarrierChevrolet1985–2005 Astro - For GM 7.5"/7.625" (10 Bolt); Performance Ring and Pinion; 3.90 Ratio; Pro Gear; Requires a 3.23 and Numerically Higher Ratio Carrier1995–2001 Blazer - For GM 7.5"/7.625" (10 Bolt); Performance Ring and Pinion; 3.90 Ratio; Pro Gear; Requires a 3.23 and Numerically Higher Ratio Carrier1982–2002 Camaro - For GM 7.5"/7.625" (10 Bolt); Performance Ring and Pinion; 3.90 Ratio; Pro Gear; Requires a 3.23 and Numerically Higher Ratio Carrier1977–1996 Caprice - For GM 7.5"/7.625" (10 Bolt); Performance Ring and Pinion; 3.90 Ratio; Pro Gear; Requires a 3.23 and Numerically Higher Ratio Carrier2004–2013 Colorado - For GM 7.6" IFS; 3.90 Ratio; Pro Gear; Requires a 3.23 and Numerically Higher Ratio Carrier1977–1987 El Camino - For GM 7.5"/7.625" (10 Bolt); Performance Ring and Pinion; 3.90 Ratio; Pro Gear; Requires a 3.23 and Numerically Higher Ratio Carrier1977–1985 Impala - For GM 7.5"/7.625" (10 Bolt); Performance Ring and Pinion; 3.90 Ratio; Pro Gear; Requires a 3.23 and Numerically Higher Ratio Carrier1994–1996 Impala - For GM 7.5"/7.625" (10 Bolt); Performance Ring and Pinion; 3.90 Ratio; Pro Gear; Requires a 3.23 and Numerically Higher Ratio Carrier1973–1983 Malibu - For GM 7.5"/7.625" (10 Bolt); Performance Ring and Pinion; 3.90 Ratio; Pro Gear; Requires a 3.23 and Numerically Higher Ratio Carrier1978–1988 Monte Carlo - For GM 7.5"/7.625" (10 Bolt); Performance Ring and Pinion; 3.90 Ratio; Pro Gear; Requires a 3.23 and Numerically Higher Ratio Carrier1976–1979 Nova - For GM 7.5"/7.625" (10 Bolt); Performance Ring and Pinion; 3.90 Ratio; Pro Gear; Requires a 3.23 and Numerically Higher Ratio Carrier1982–2004 S10 - For GM 7.5"/7.625" (10 Bolt); Performance Ring and Pinion; 3.90 Ratio; Pro Gear; Requires a 3.23 and Numerically Higher Ratio Carrier1983–1994 S10 Blazer - For GM 7.5"/7.625" (10 Bolt); Performance Ring and Pinion; 3.90 Ratio; Pro Gear; Requires a 3.23 and Numerically Higher Ratio CarrierGMC2004–2012 Canyon - For GM 7.6" IFS; 3.90 Ratio; Pro Gear; Requires a 3.23 and Numerically Higher Ratio Carrier1992–2005 Jimmy - For GM 7.5"/7.625" (10 Bolt); Performance Ring and Pinion; 3.90 Ratio; Pro Gear; Requires a 3.23 and Numerically Higher Ratio Carrier1982–1990 S15 - For GM 7.5"/7.625" (10 Bolt); Performance Ring and Pinion; 3.90 Ratio; Pro Gear; Requires a 3.23 and Numerically Higher Ratio Carrier1983–1991 S15 Jimmy - For GM 7.5"/7.625" (10 Bolt); Performance Ring and Pinion; 3.90 Ratio; Pro Gear; Requires a 3.23 and Numerically Higher Ratio Carrier1985–2005 Safari - For GM 7.5"/7.625" (10 Bolt); Performance Ring and Pinion; 3.90 Ratio; Pro Gear; Requires a 3.23 and Numerically Higher Ratio Carrier1991–2004 Sonoma - For GM 7.5"/7.625" (10 Bolt); Performance Ring and Pinion; 3.90 Ratio; Pro Gear; Requires a 3.23 and Numerically Higher Ratio Carrier1991–1991 Syclone - For GM 7.5"/7.625" (10 Bolt); Performance Ring and Pinion; 3.90 Ratio; Pro Gear; Requires a 3.23 and Numerically Higher Ratio CarrierHummer2006–2010 H3 - For GM 7.5"/7.625" (10 Bolt); Performance Ring and Pinion; 3.90 Ratio; Pro Gear; Requires a 3.23 and Numerically Higher Ratio Carrier2009–2010 H3T - For GM 7.5"/7.625" (10 Bolt); Performance Ring and Pinion; 3.90 Ratio; Pro Gear; Requires a 3.23 and Numerically Higher Ratio CarrierIsuzu2003–2008 Ascender - For GM 7.6" IFS; 3.90 Ratio; Pro Gear; Requires a 3.23 and Numerically Higher Ratio Carrier1981–1995 Pickup - For GM 7.5"/7.625" (10 Bolt); Performance Ring and Pinion; 3.90 Ratio; Pro Gear; Requires a 3.23 and Numerically Higher Replaces OEM & Aftermarket Part NumbersYukon YG GM7.5-390USA Standard ZG GM7.5-390Richmond 69-0050-1AAM 26013189Warranty & Quality AssuranceBacked by a 2-Year / 100,000-Mile Warranty, Motive Gear products are known for their high-strength construction, quiet performance, and reliability in both stock and performance vehicles. Trusted by racers and professionals worldwide.

• Performance ring and pinion set with 3.90 gear ratio for GM 7.5"/7.625" axles; made from high-strength 9310 steel for enhanced durability in high-torque conditions.
• Features 10 cover bolts, 27 spline pinion shaft, 10 pinion teeth, and 39 ring gear teeth; compatible with carriers for 3.23 and numerically higher ratios.
• Ring gear has a standard rotation, 7.5" outer diameter, and installs using 10 ring gear bolts; pinion shaft diameter is 1.438".
• Ideal for street/strip or off-road applications requiring precision and strength under demanding conditions; made for GM passenger cars and light trucks.
• Includes ring gear and pinion gear set; backed by Motive Gear’s 2-year/100,000-mile warranty for peace of mind and proven performance.