Yukon Gear & Axle YGK142 GM 8.5in 3.73 Ratio Ring & Pinion with Master Install Kit and Dura Grip Posi Package

The Yukon Gear & Axle YGK142 is a comprehensive drivetrain upgrade package for GM 8.5-inch rear axle applications. This all-in-one kit combines a 3.73 ratio ring and pinion gear set, a complete master install kit, and a 30-spline Yukon Dura Grip limited slip positraction unit—everything needed to upgrade gearing and traction in a single purchase.

The ring and pinion gears are manufactured to Yukon's exacting quality standards, using high-grade steel with precision tooth geometry for smooth, quiet operation and long service life. The included Dura Grip limited slip differential provides improved traction by transferring torque to the wheel with the most grip, making it an ideal upgrade for performance, off-road, and towing applications.

Package Includes:

• GM 8.5-inch 3.73 ratio ring and pinion gear set
• Master install kit with carrier bearings, pinion bearings, and races
• 30-spline Yukon Dura Grip limited slip positraction unit
• Axle bearings and seals
• Pinion seal and crush sleeve
• Ring gear bolts and marking compound

Key Features:

• Gear Ratio: 3.73
• Axle Type: GM 8.5-inch rear differential
• Spline Count: 30-spline positraction unit
• Limited Slip: Yukon Dura Grip clutch-pack style positraction
• High-strength steel construction for durability under heavy loads
• All components sourced and matched by Yukon for guaranteed fitment and compatibility

Bundling the ring and pinion, master install kit, and Dura Grip posi into one package eliminates the guesswork of sourcing compatible components separately. Whether building a performance street machine, a tow rig, or an off-road vehicle, the Yukon YGK142 delivers reliable, matched drivetrain components in a single convenient kit.