Yukon Gear & Axle SK 42429 Dana 80 Pinion Preload Shim Kit

The Yukon Gear & Axle SK 42429 is a pinion preload shim kit specifically designed for Dana 80 rear differentials. This precision-machined shim set allows technicians to achieve the proper pinion bearing preload during differential setup and rebuild procedures.

Key Features:

• Designed specifically for Dana 80 axle applications
• Inner diameter: 1.642 inches, outer diameter: 1.969 inches
• Precision-machined shims for accurate preload adjustment
• Essential for proper differential setup and gear pattern alignment
• Helps achieve factory-specified pinion bearing preload (typically 25-40 inch-lbs)
• Machined finish ensures consistent thickness and reliable performance

Pinion preload shims are critical components used during differential assembly to control the bearing preload on the pinion gear. Proper preload ensures optimal gear mesh, reduces noise, and maximizes bearing life. The SK 42429 kit provides the range of shim thicknesses needed for professional Dana 80 differential rebuilds, maintenance, and gear installations.