American Axle Manufacturing's high-performance ring and pinion gear sets are the benchmark of quality in the automotive gear industry. Engineers use state-of-the art design, advanced heat-treating techniques, and leading-edge quality testing processes to ensure the structure and surface finish meet exacting specifications and quality standards. 

• Fits GM 8.5" and 8.6"
• 8.50" ring gear diameter
• 30 spline pinion
• 10 ring gear bolts
• 3.73 ratio