Yukon Gear High Performance Gear Set For GM 8.5in & 8.6in in a 3.73 Ratio
Technical Data
Ring and Pinion Gear Set from Yukon Gear is engineered for truck and SUV owners who demand dependable performance and rugged reliability. Designed for GM 8.5" and 8.6" differentials, this gear set ensures consistent strength and smooth operation whether installed in the front or rear axle.
Built with high-performance engineering, the Yukon Gear Ring and Pinion Gear Set is crafted to handle heavy loads, off-road terrain, and demanding driving conditions. The 3.73 ratio provides the perfect balance of torque and fuel efficiency, making it ideal for versatile truck applications.
Backed by Yukon’s reputation for quality and precision, this gear set is trusted by enthusiasts and professionals alike. If you want a gear set that won’t quit when the job gets tough, Yukon delivers the strength and dependability your GM axle deserves.
Features and Benefits
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High Performance Build – Engineered for maximum strength and longevity under heavy loads.
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3.73 Gear Ratio – Balances towing power with fuel efficiency.
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Precision Machining – Ensures smooth operation and reduced wear.
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Trusted Yukon Quality – Backed by a brand known for reliability.
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Perfect Fit – Designed for GM 8.5" & 8.6" differentials (1999–2008).
Built for American Roads
With the Ring and Pinion Gear Set, you’ll feel the difference in pulling power, acceleration, and overall drivability. Yukon Gear makes sure your truck is ready for whatever America throws at it—whether that’s hauling, mudding, or long highway runs.
Specifications
| Specification | Detail |
|---|---|
| Part Number | yukYG GM8.5-373 |
| Axle Model | GM 8.5 & GM 8.6 |
| Gear Ratio | 3.73 |
| Pinion Spline Count | 30 |
| Ring Gear Bolt Quantity | 10 |
| Ring Gear Diameter | 8.5 inches / 11 inches (outer) |
| Cover Bolt Quantity | 10 |
| Differential Fitment | GM 8.6 Rear, 1999–2008 |
| Position | Front or Rear |
| Axle Type | Semi Floating |
| Pinion Gear Shaft Length | 7.149 inches |
| Pinion Shaft Diameter | 7.149 inches |
| Mounting Hardware | Not Included |
| Shims | Not Included |
| CA Proposition 65 | Not Applicable |
Installation Instructions
Installation Instructions
Installation Instructions
This Part Fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1980-1989 | Buick | Electra | Estate Wagon |
| 1980-1985 | Buick | Electra | Limited |
| 1980-1985 | Buick | Electra | Park Avenue |
| 1985 | Buick | Electra | T-Type |
| 2004-2007 | Buick | Rainier | CXL |
| 2004-2005 | Buick | Rainier | CXL Plus |
| 1980-1987 | Buick | Regal | Base |
| 1982-1983 | Buick | Regal | Estate Wagon |
| 1987 | Buick | Regal | GNX |
| 1984-1987 | Buick | Regal | Grand National |
| 1980-1987 | Buick | Regal | Limited |
| 1982 | Buick | Regal | Limited Turbo |
| 1980-1982 | Buick | Regal | Sport |
| 1983-1986 | Buick | Regal | T-Type |
| 1999-2000,2002-2013 | Cadillac | Escalade | Base |
| 2009-2013 | Cadillac | Escalade | Hybrid |
| 2010-2013 | Cadillac | Escalade | Hybrid Platinum |
| 2011-2013 | Cadillac | Escalade | Luxury |
| 2008-2013 | Cadillac | Escalade | Platinum |
| 2011-2013 | Cadillac | Escalade | Premium |
| 2013 | Chevrolet | Avalanche | Black Diamond LS |
| 2013 | Chevrolet | Avalanche | Black Diamond LT |
| 2013 | Chevrolet | Avalanche | Black Diamond LTZ |
| 2007-2012 | Chevrolet | Avalanche | LS |
| 2007-2012 | Chevrolet | Avalanche | LT |
| 2007-2012 | Chevrolet | Avalanche | LTZ |
| 2002-2005 | Chevrolet | Avalanche 1500 | Base |
| 2005-2006 | Chevrolet | Avalanche 1500 | LS |
| 2005-2006 | Chevrolet | Avalanche 1500 | LT |
| 2002-2003 | Chevrolet | Avalanche 1500 | North Face |
| 2002-2003 | Chevrolet | Avalanche 1500 | On Road Edition |
| 2003 | Chevrolet | Avalanche 1500 | WBH |
| 2004-2006 | Chevrolet | Avalanche 1500 | Z66 |
| 2002-2006 | Chevrolet | Avalanche 1500 | Z71 |
| 1994 | Chevrolet | Blazer | Base |
| 1992-1993 | Chevrolet | Blazer | Cheyenne |
| 1987 | Chevrolet | Blazer | Custom Deluxe |
| 1988-1991 | Chevrolet | Blazer | Scottsdale |
| 1987-1994 | Chevrolet | Blazer | Silverado |
| 1994 | Chevrolet | Blazer | Silverado Sport |
| 1980 | Chevrolet | C10 | Big Ten |
| 1980-1981 | Chevrolet | C10 | Cheyenne |
| 1981-1986 | Chevrolet | C10 | Custom |
| 1980 | Chevrolet | C10 | Custom Deluxe |
| 1981 | Chevrolet | C10 | Deluxe |
| 1980-1986 | Chevrolet | C10 | Scottsdale |
| 1980-1986 | Chevrolet | C10 | Silverado |
| 1981-1986 | Chevrolet | C10 Suburban | Custom |
| 1980 | Chevrolet | C10 Suburban | Custom Deluxe |
| 1981 | Chevrolet | C10 Suburban | Deluxe |
| 1980,1982,1984-1986 | Chevrolet | C10 Suburban | Scottsdale |
| 1980,1982-1986 | Chevrolet | C10 Suburban | Silverado |
| 1990-1993 | Chevrolet | C1500 | 454 SS |
| 1994-1997 | Chevrolet | C1500 | Base |
| 1988-1998 | Chevrolet | C1500 | Cheyenne |
| 1999 | Chevrolet | C1500 | LS |
| 1988-1992 | Chevrolet | C1500 | Scottsdale |
| 1988-1998 | Chevrolet | C1500 | Silverado |
| 1990-1998 | Chevrolet | C1500 | WT |
| 1992-1999 | Chevrolet | C1500 Suburban | Base |
| 1995-1999 | Chevrolet | C1500 Suburban | LS |
| 1995-1997,1999 | Chevrolet | C1500 Suburban | LT |
| 1992-1994 | Chevrolet | C1500 Suburban | Silverado |
| 1994-1997,1999-2000 | Chevrolet | C2500 | Base |
| 1989-1998 | Chevrolet | C2500 | Cheyenne |
| 1999-2000 | Chevrolet | C2500 | LS |
| 1989-1992 | Chevrolet | C2500 | Scottsdale |
| 1989-1998 | Chevrolet | C2500 | Silverado |
| 1994-1995,1998 | Chevrolet | C2500 | WT |
| 1980 | Chevrolet | Camaro | Base |
| 1980-1981 | Chevrolet | Camaro | Berlinetta |
| 1980 | Chevrolet | Camaro | Rally Sport |
| 1981 | Chevrolet | Camaro | Sport |
| 1980-1981 | Chevrolet | Camaro | Z28 |
| 1986-1992 | Chevrolet | Caprice | Base |
| 1980-1996 | Chevrolet | Caprice | Classic |
| 1986-1990 | Chevrolet | Caprice | Classic Brougham |
| 1981-1982 | Chevrolet | Caprice | Classic Estate |
| 1980-1981 | Chevrolet | Caprice | Classic Landau |
| 1993-1994 | Chevrolet | Caprice | Classic LS |
| 1987-1990 | Chevrolet | Caprice | Classic LS Brougham |
| 1991-1993 | Chevrolet | Caprice | Classic LTZ |
| 1980 | Chevrolet | Caprice | Classic Sport |
| 2004 | Chevrolet | Colorado | Base |
| 2004,2006-2008 | Chevrolet | Colorado | LS |
| 2006-2012 | Chevrolet | Colorado | LT |
| 2004-2005 | Chevrolet | Colorado | Sport |
| 2004-2005 | Chevrolet | Colorado | Sport LS |
| 2006-2012 | Chevrolet | Colorado | WT |
| 2004-2005 | Chevrolet | Colorado | Z71 |
| 2004-2005 | Chevrolet | Colorado | Z71 LS |
| 2004-2005 | Chevrolet | Colorado | Z85 |
| 2004-2005 | Chevrolet | Colorado | Z85 LS |
| 1996-2014 | Chevrolet | Express 1500 | Base |
| 1996-2014 | Chevrolet | Express 1500 | LS |
| 2001-2002,2006-2014 | Chevrolet | Express 1500 | LT |
| 1983 | Chevrolet | G10 | Base |
| 1980-1995 | Chevrolet | G10 | Beauville |
| 1981-1984,1986-1987 | Chevrolet | G10 | Bonaventure |
| 1980-1995 | Chevrolet | G10 | Chevy Van |
| 1980-1995 | Chevrolet | G10 | Sportvan |
| 1980-1995 | Chevrolet | G20 | Beauville |
| 1983-1984 | Chevrolet | G20 | Bonaventure |
| 1980-1995 | Chevrolet | G20 | Chevy Van |
| 1980-1981 | Chevrolet | G20 | Nomad |
| 1980-1995 | Chevrolet | G20 | Sportvan |
| 1980-1985 | Chevrolet | Impala | Base |
| 1981-1982 | Chevrolet | Impala | Estate |
| 1980 | Chevrolet | Impala | Sport |
| 1994-1996 | Chevrolet | Impala | SS |
| 1980-1981 | Chevrolet | K10 | Cheyenne |
| 1981-1986 | Chevrolet | K10 | Custom |
| 1980 | Chevrolet | K10 | Custom Deluxe |
| 1981 | Chevrolet | K10 | Deluxe |
| 1980-1986 | Chevrolet | K10 | Scottsdale |
| 1980-1986 | Chevrolet | K10 | Silverado |
| 1981-1986 | Chevrolet | K10 Suburban | Custom |
| 1980 | Chevrolet | K10 Suburban | Custom Deluxe |
| 1981 | Chevrolet | K10 Suburban | Deluxe |
| 1980,1982,1984-1986 | Chevrolet | K10 Suburban | Scottsdale |
| 1980,1982-1983,1985-1986 | Chevrolet | K10 Suburban | Silverado |
| 1994-1997 | Chevrolet | K1500 | Base |
| 1988-1998 | Chevrolet | K1500 | Cheyenne |
| 1999 | Chevrolet | K1500 | LS |
| 1988-1992 | Chevrolet | K1500 | Scottsdale |
| 1988-1998 | Chevrolet | K1500 | Silverado |
| 1991 | Chevrolet | K1500 | Sport |
| 1990-1998 | Chevrolet | K1500 | WT |
| 1992-1999 | Chevrolet | K1500 Suburban | Base |
| 1995-1999 | Chevrolet | K1500 Suburban | LS |
| 1995-1997,1999 | Chevrolet | K1500 Suburban | LT |
| 1992-1994 | Chevrolet | K1500 Suburban | Silverado |
| 1980-1981 | Chevrolet | K20 | Cheyenne |
| 1981-1986 | Chevrolet | K20 | Custom |
| 1980 | Chevrolet | K20 | Custom Deluxe |
| 1981 | Chevrolet | K20 | Deluxe |
| 1980-1986 | Chevrolet | K20 | Scottsdale |
| 1980-1983,1985-1986 | Chevrolet | K20 | Silverado |
| 1981-1986 | Chevrolet | K20 Suburban | Custom |
| 1980 | Chevrolet | K20 Suburban | Custom Deluxe |
| 1981 | Chevrolet | K20 Suburban | Deluxe |
| 1980,1982,1984-1986 | Chevrolet | K20 Suburban | Scottsdale |
| 1980,1982-1983,1985-1986 | Chevrolet | K20 Suburban | Silverado |
| 1980 | Chevrolet | K5 Blazer | Cheyenne |
| 1981-1986 | Chevrolet | K5 Blazer | Custom |
| 1980 | Chevrolet | K5 Blazer | Custom Deluxe |
| 1981 | Chevrolet | K5 Blazer | Deluxe |
| 1984 | Chevrolet | K5 Blazer | Scottsdale |
| 1980-1986 | Chevrolet | K5 Blazer | Silverado |
| 1980-1981 | Chevrolet | Malibu | Base |
| 1980-1983 | Chevrolet | Malibu | Classic |
| 1980 | Chevrolet | Malibu | Classic Estate |
| 1980-1981 | Chevrolet | Malibu | Classic Landau |
| 1980 | Chevrolet | Malibu | Classic Sport |
| 1980 | Chevrolet | Malibu | Estate |
| 1980 | Chevrolet | Malibu | Sport |
| 1987 | Chevrolet | R10 | Custom Deluxe |
| 1987 | Chevrolet | R10 | Scottsdale |
| 1987 | Chevrolet | R10 | Silverado |
| 1987 | Chevrolet | R10 Suburban | Custom Deluxe |
| 1987-1988 | Chevrolet | R10 Suburban | Scottsdale |
| 1987-1988 | Chevrolet | R10 Suburban | Silverado |
| 1989-1991 | Chevrolet | R1500 Suburban | Scottsdale |
| 1989-1991 | Chevrolet | R1500 Suburban | Silverado |
| 1994-2003 | Chevrolet | S10 | Base |
| 1994-2004 | Chevrolet | S10 | LS |
| 1994-1998 | Chevrolet | S10 | SS |
| 1999-2003 | Chevrolet | S10 | Xtreme |
| 1994-2003 | Chevrolet | S10 | ZR2 |
| 2002-2004 | Chevrolet | S10 | ZR5 |
| 1999-2005 | Chevrolet | Silverado 1500 | Base |
| 2016-2017 | Chevrolet | Silverado 1500 | Custom |
| 2014-2017 | Chevrolet | Silverado 1500 | High Country |
| 2004-2006,2009-2013 | Chevrolet | Silverado 1500 | Hybrid |
| 1999-2013,2015-2017 | Chevrolet | Silverado 1500 | LS |
| 1999-2017 | Chevrolet | Silverado 1500 | LT |
| 2007-2017 | Chevrolet | Silverado 1500 | LTZ |
| 2005-2006 | Chevrolet | Silverado 1500 | SS |
| 2015-2017 | Chevrolet | Silverado 1500 | SSV |
| 2002-2017 | Chevrolet | Silverado 1500 | WT |
| 2010-2013 | Chevrolet | Silverado 1500 | XFE |
| 2004-2005 | Chevrolet | Silverado 1500 | Z71 Off-Road |
| 2007 | Chevrolet | Silverado 1500 Classic | Hybrid |
| 2007 | Chevrolet | Silverado 1500 Classic | LS |
| 2007 | Chevrolet | Silverado 1500 Classic | LT |
| 2007 | Chevrolet | Silverado 1500 Classic | SS |
| 2007 | Chevrolet | Silverado 1500 Classic | WT |
| 2003-2006 | Chevrolet | SSR | Base |
| 2000-2001,2006 | Chevrolet | Suburban 1500 | Base |
| 2000-2014 | Chevrolet | Suburban 1500 | LS |
| 2000-2014 | Chevrolet | Suburban 1500 | LT |
| 2007-2014 | Chevrolet | Suburban 1500 | LTZ |
| 2002-2006 | Chevrolet | Suburban 1500 | Z71 |
| 1995-2001,2006 | Chevrolet | Tahoe | Base |
| 2008-2013 | Chevrolet | Tahoe | Hybrid |
| 2000 | Chevrolet | Tahoe | Limited |
| 1995-2017 | Chevrolet | Tahoe | LS |
| 1995-2017 | Chevrolet | Tahoe | LT |
| 2007-2016 | Chevrolet | Tahoe | LTZ |
| 2007-2017 | Chevrolet | Tahoe | PPV |
REVIEWS
Installed the Yukon 3.73 gears in my ’04 Silverado. The truck feels stronger off the line and cruises smooth on the highway. Great upgrade for towing and daily driving.
Mark L.
San Antonio, TX
Put these gears in my GMC Sierra. The 3.73 ratio gives me the right mix of torque and efficiency. Yukon nailed it—quiet, tough, and dependable.
Tom S.
Boise, ID
Specifications
Fitment Data
• Engineered for precision compatibility with high-performance builds.
• Tested under extreme mechanical stress for guaranteed structural integrity.
Use the Riot Vehicle Finder to verify exact sub-model compatibility.
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