ZG GM8.5-488 Ring and Pinion Gear Set by USA Standard Gear

The ZG GM8.5-488 by USA Standard Gear is engineered for those looking to enhance the performance of their GM 8.5-inch differential. This ring and pinion gear set offers a precise 4.88 gear ratio, which is ideal for applications requiring improved acceleration and torque. The set is crafted from high-quality materials to ensure durability and reliability under demanding conditions.

Specifications

• Fits GM 8.5 inch and 8.6 inch differentials
• Ring Gear Diameter: 8.50 inches
• Pinion Spline Count: 30
• Includes 10 ring gear bolts for secure installation
• Gear Ratio: 4.88

Installation Notes

When installing the ZG GM8.5-488, ensure that your differential is compatible with the GM 8.5 or 8.6 inch specifications. Proper installation is crucial for performance and longevity, so consult a professional if you are not experienced with differential work.

Warranty Information

This product comes with a 1-year warranty against manufacturer defects, giving you confidence in your investment.

Confirmed Fitment

The ZG GM8.5-488 is compatible with a wide range of GM vehicles, including:

• Buick Apollo (1973-1975)
• Buick Electra (1971-1989)
• Chevrolet Silverado 1500 (1999-2017)
• GMC Sierra (1999-2017)
• Chevrolet Tahoe (1995-2017)
• Oldsmobile Cutlass (1970-1977)
• Pontiac Firebird (1970-1981)
• And many more...

For a comprehensive list of compatible vehicles, please refer to the product specifications or consult with your parts supplier.