Richmond Gear 49-0034-1, Differential Ring & Pinion, For GM 8.5/8.625 10-Bolt, Gear Ratio 3.90, 10-Bolt, 30 Spline, 11 Pinion & 43 Ring Tooth – Fits Multiple GM Cars, Trucks Replaces G885390, GM10-390

Richmond Gear 49-0034-1, Differential Ring & Pinion, For GM 8.5/8.625 10-Bolt, Gear Ratio 3.90, 10-Bolt, 30 Spline, 11 Pinion & 43 Ring Tooth – Fits Multiple GM Cars, Trucks Replaces G885390, GM10-390

• 10-Bolt gear set with 3.90 ratio, features 11-tooth pinion and 43-tooth ring gear for optimal performance; precision engineered for GM 8.5"/8.625" axles in both front and rear applications.
• Includes ring gear and pinion gear set with 30 spline pinion shaft, designed for high strength and quiet operation under load; uses carrier for 2.73 & numerically higher ratios.
• Ring gear outside diameter: 8.5 inches; pinion shaft diameter: 1.625"; pinion spline count: 30; 10 ring gear bolt holes for secure installation.
• Includes 1 ring gear and 1 pinion gear; installation kit not included; designed for OE fitment and smooth, quiet operation under load.
• Backed by Richmond Gear's 2-year/100,000-mile warranty; trusted by racing professionals and off-road enthusiasts for consistent performance.