USA Standard Gear ZGK2190 Chrysler 8.25" 4.56 Rear Ring & Pinion Gear and Master Install Kit with Axle Bearings & Seals

The USA Standard Gear ZGK2190 is a complete re-gearing solution for the Chrysler 8.25" rear differential, bundling a 4.56 ratio ring and pinion gear set with a full Master Installation Kit into one convenient part number. Designed for carrier cases built for a 2.56 and up gear ratio, this kit includes everything needed for a proper differential installation — eliminating the hassle of sourcing individual components separately.

Kit Includes:

• 4.56 ratio rear ring and pinion gear set — 8.25" / 213mm ring gear diameter, 10-bolt ring gear
• Master Installation Kit with high-quality Koyo bearings and races
• Pinion bearings and races
• Carrier bearings and shims
• Pinion shims, crush sleeve, and pinion nut
• Ring gear bolts
• Pinion seal
• Cover gasket
• 1.618" ID axle bearings and seals (AK 1559)

Key Specifications:

• Axle: Chrysler 8.25" rear differential
• Gear Ratio: 4.56:1
• Ring Gear Diameter: 8.25" (213mm)
• Ring Gear Bolts: 10
• Pinion Spline Count: 27
• Axle Bearing ID: 1.618"
• Compatible Carrier Cases: 2.56 ratio and up

USA Standard Gear subjects all ring and pinion sets to rigorous in-house quality testing, including dimensional, material, and fitment inspections, to ensure they meet or exceed OEM specifications. This Quick Kit format is designed to get vehicles off the lift and back on the road quickly, providing a cost-effective, one-stop solution for differential re-gearing or rebuild.