Yukon Gear & Axle YDAC8.89-390P/L Dropout Assembly Chrysler 8.75" 489 Case 3.90 Ratio

The Yukon Gear & Axle YDAC8.89-390P/L is a complete dropout assembly engineered for Chrysler 8.75" differentials with 489 cases. Built by expert Yukon technicians, this assembly comes fully shimmed and backlashed to manufacturer specifications, eliminating the guesswork and labor involved in differential setup. This unit is ready to install right out of the box, making it an ideal solution for rebuilds, upgrades, or performance applications.

Key Features:

• Factory-assembled and pre-shimmed for proper gear mesh and backlash
• Upgraded with Sure-Grip/Powr-Lok clutch-type limited slip differential for superior traction
• 3.90 gear ratio provides excellent balance of acceleration and drivability
• 30 spline axle shaft compatibility
• Fits Chrysler 8.75" differential with 489 casting case
• Complete dropout assembly—includes ring and pinion, carrier, and limited slip internals

What's Included:

• Fully assembled dropout with ring and pinion gear set
• Sure-Grip clutch-type limited slip differential carrier
• All internal bearings and shims pre-installed

Please Note: Pinion yoke is not included and must be purchased separately. The Sure-Grip limited slip differential provides predictable power distribution to both rear wheels, improving traction during acceleration and cornering while maintaining smooth street manners.