Yukon Gear & Axle

Yukon Gear High Performance Gear Set For GM 12 Bolt Truck in a 3.73 Ratio

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Technical Data

Ring and Pinion Gear Set from Yukon Gear is designed for truck owners who want dependable performance and rugged reliability. Whether you’re towing, off-roading, or upgrading your daily driver, this gear set ensures your GM 12 Bolt Truck differential delivers consistent power and smooth operation.

Built with high-performance engineering, the Yukon Gear Ring and Pinion Gear Set is crafted to handle heavy loads and demanding conditions. The 3.73 ratio strikes the perfect balance between 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 truck deserves.


Features and Benefits

  • High Performance Build – Engineered for maximum strength and longevity under heavy loads.

  • 3.73 Gear Ratio – Balances towing power with fuel efficiency.

  • Precision Machining – Ensures smooth operation and reduced wear.

  • Trusted Yukon Quality – Backed by a brand known for reliability.

  • Perfect Fit – Designed for GM 12 Bolt Truck differentials.


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 GM12T-373
Axle Model GM 12T
Gear Ratio 3.73
Pinion Spline Count 30
Ring Gear Bolt Quantity 12
Ring Gear Diameter 8.88 – 8.875 inches
Cover Bolt Quantity 12
Differential Fitment GM 12 Bolt Truck
Position Rear
Axle Type Semi Float
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
1969-1974 Chevrolet Blazer Base
1987 Chevrolet Blazer Custom Deluxe
1987 Chevrolet Blazer Silverado
1978-1980 Chevrolet C10 Big Ten
1975-1981 Chevrolet C10 Cheyenne
1981-1986 Chevrolet C10 Custom
1975-1980 Chevrolet C10 Custom Deluxe
1981 Chevrolet C10 Deluxe
1975-1986 Chevrolet C10 Scottsdale
1975-1986 Chevrolet C10 Silverado
1963-1974 Chevrolet C10 Pickup Base
1975-1981 Chevrolet G10 Beauville
1981 Chevrolet G10 Bonaventure
1975-1981 Chevrolet G10 Chevy Van
1975-1981 Chevrolet G10 Sportvan
1967,1969-1974 Chevrolet G10 Van Base
1968-1974 Chevrolet G10 Van Sportvan
1975-1981 Chevrolet K10 Cheyenne
1981-1986 Chevrolet K10 Custom
1975-1980 Chevrolet K10 Custom Deluxe
1981 Chevrolet K10 Deluxe
1975-1986 Chevrolet K10 Scottsdale
1975-1986 Chevrolet K10 Silverado
1963-1974 Chevrolet K10 Pickup Base
1967-1974 Chevrolet K10 Suburban Base
1981-1986 Chevrolet K10 Suburban Custom
1975-1980 Chevrolet K10 Suburban Custom Deluxe
1981 Chevrolet K10 Suburban Deluxe
1975-1980,1982,1984-1986 Chevrolet K10 Suburban Scottsdale
1975-1977,1979-1980,1982-1983,1985-1986 Chevrolet K10 Suburban Silverado
1976 Chevrolet K5 Blazer Base
1975-1980 Chevrolet K5 Blazer Cheyenne
1981-1986 Chevrolet K5 Blazer Custom
1975,1977-1980 Chevrolet K5 Blazer Custom Deluxe
1981 Chevrolet K5 Blazer Deluxe
1984 Chevrolet K5 Blazer Scottsdale
1978,1980-1986 Chevrolet K5 Blazer Silverado
1987 Chevrolet R10 Custom Deluxe
1987 Chevrolet R10 Scottsdale
1987 Chevrolet R10 Silverado
1963-1966 Chevrolet Suburban Base
1987 Chevrolet V10 Custom Deluxe
1987 Chevrolet V10 Scottsdale
1987 Chevrolet V10 Silverado
1987 Chevrolet V10 Suburban Custom Deluxe
1987 Chevrolet V10 Suburban Scottsdale
1987 Chevrolet V10 Suburban Silverado
1975-1978 GMC C15 Base
1977-1978 GMC C15 Heavy Half
1975-1978 GMC C15 High Sierra
1977 GMC C15 Indy Hauler
1975-1978 GMC C15 Sierra Classic
1975-1978 GMC C15 Sierra Grande
1978 GMC C15 Street Coupe
1975-1978 GMC C15 Suburban Base
1975-1978 GMC C15 Suburban High Sierra
1975-1978 GMC C15 Suburban Sierra Classic
1975-1978 GMC C15 Suburban Sierra Grande
1967-1974 GMC C15/C1500 Pickup Base
1967-1974 GMC C15/C1500 Suburban Base
1979-1986 GMC C1500 Base
1979-1980 GMC C1500 Heavy Half
1979-1986 GMC C1500 High Sierra
1979-1986 GMC C1500 Sierra Classic
1979-1982 GMC C1500 Sierra Grande
1979-1982 GMC C1500 Street Coupe
1979-1986 GMC C1500 Suburban Base
1979-1986 GMC C1500 Suburban High Sierra
1979-1986 GMC C1500 Suburban Sierra Classic
1979-1982 GMC C1500 Suburban Sierra Grande
1975-1978 GMC G15 Rally
1975-1978 GMC G15 Rally STX
1975-1978 GMC G15 Vandura
1967,1970-1971 GMC G15/G1500 Van Base
1968-1969,1971-1974 GMC G15/G1500 Van Rally
1968-1974 GMC G15/G1500 Van Vandura
1964-1966 GMC G1500 Base
1979-1987 GMC G1500 Rally
1983-1984 GMC G1500 Rally Custom
1979-1987 GMC G1500 Rally STX
1979-1987 GMC G1500 Vandura
1975-1978 GMC G25 Rally
1975-1978 GMC G25 Rally STX
1975-1978 GMC G25 Vandura
1967,1970-1972 GMC G25/G2500 Van Base
1968-1969,1971-1974 GMC G25/G2500 Van Rally
1968-1974 GMC G25/G2500 Van Vandura
1979-1981 GMC G2500 Rally
1979-1981 GMC G2500 Rally STX
1979-1981 GMC G2500 Vandura
1975-1978 GMC K15 Base
1975-1978 GMC K15 High Sierra
1977 GMC K15 Indy Hauler
1975-1978 GMC K15 Sierra Classic
1975-1978 GMC K15 Sierra Grande
1975-1978 GMC K15 Suburban Base
1975-1978 GMC K15 Suburban High Sierra
1975-1978 GMC K15 Suburban Sierra Classic
1975-1978 GMC K15 Suburban Sierra Grande
1966-1974 GMC K15/K1500 Pickup Base
1967-1974 GMC K15/K1500 Suburban Base
1979-1986 GMC K1500 Base
1979-1986 GMC K1500 High Sierra
1979-1986 GMC K1500 Sierra Classic
1979-1982 GMC K1500 Sierra Grande
1979-1985 GMC K1500 Suburban Base
1979-1985 GMC K1500 Suburban High Sierra
1979-1985 GMC K1500 Suburban Sierra Classic
1979-1982 GMC K1500 Suburban Sierra Grande
1987 GMC R1500 Base
1987 GMC R1500 High Sierra
1987 GMC R1500 Sierra Classic
1987 GMC R1500 Suburban Base
1987 GMC R1500 Suburban High Sierra
1987 GMC R1500 Suburban Sierra Classic
1963-1966 GMC Suburban Base
1987 GMC V1500 Base
1987 GMC V1500 High Sierra
1987 GMC V1500 Sierra Classic
1987 GMC V1500 Suburban Base
1987 GMC V1500 Suburban High Sierra
1987 GMC V1500 Suburban Sierra Classic

REVIEWS

DK

Installed the Yukon 3.73 gears in my ’85 Chevy C10. The truck feels stronger off the line and cruises smooth on the highway. Great upgrade for classic rigs.

David K.

Houston, TX

★★★★★
SM

Put these gears in my GM 12 bolt rear end. Perfect balance of power and efficiency. Yukon nailed it—smooth, quiet, and tough enough for hauling loads every weekend.

Steven M.

Denver, CO

★★★★★

Specifications

Finish Industrial Grade
Material High-Strength Composite
Rating Performance++

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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Yukon Gear High Performance Gear Set For GM 12 Bolt Truck in a 3.73 Ratio

$454.89