Dorman 697-318 Differential Ring and Pinion - Rear

Dorman 697-318 Differential Ring and Pinion

Dorman 697-318 is a standard replacement differential ring and pinion set made to directly replace the original equipment on specific rear axle applications. It is built for vehicles using a 3.73 gear ratio and is a fitment-based solution for Chevrolet and GMC trucks, vans, SUVs, and utility models across multiple model years.

Key Features

• Direct replacement differential ring and pinion for OE-style service
• 3.73 gear ratio for rear axle applications
• Standard item grade for routine differential repair
• Designed for semi-floating axle setups
• Ring gear outside diameter: 9.5 in.; inside diameter: 8.5 in.
• Pinion gear tooth quantity: 10
• Pinion shaft diameter: 2 in.; pinion gear shaft length: 7.1 in.
• Compatible with rear applications on select Chevrolet C1500, K1500, GMC C2500, K2500, Yukon, and related models

Detailed Description

Dorman 697-318 is engineered as a direct OE replacement for rear differential service on select Chevrolet and GMC applications with a 3.73 axle ratio. This ring and pinion set is specified for a wide range of vehicles, including Chevrolet C1500, C2500, K1500, K2500, G20, G30, S10, and GMC C1500, C2500, K1500, K2500, Yukon, Safari, and Savana 2500 models. If you are searching for a rear differential ring and pinion for a 1988-1997 Chevrolet C1500 or a 1992-1997 GMC Yukon with a 3.73 ratio, this part number is built for that application. Part number 697-318 also cross-references 743B730A for the same application.

The gear set uses a 10-tooth pinion and a 9.5-inch ring gear outside diameter, making it a practical replacement for differential rebuilds where the original gear ratio and axle configuration must be maintained. Dorman 697-318 is intended for rear axle service on semi-floating setups and is listed for numerous rear-position applications across Chevrolet and GMC trucks, vans, and SUVs.

What It Is Used For

• Restoring correct rear axle gear ratio after differential wear or damage
• Replacing noisy, chipped, or worn ring and pinion gears
• Repairing driveline issues tied to gear tooth wear or improper mesh
• Maintaining factory-style 3.73 gearing in Chevrolet and GMC rear differentials
• Supporting differential rebuilds on older truck, van, and SUV platforms

Installation Notes and Tips

Installation requires differential setup procedures, including gear backlash, pinion depth, and bearing preload adjustment. Shims are not included, and installation kit hardware is not included, so verify all setup components before beginning the repair. Confirm axle type, rear position, and 3.73 ratio before ordering, and compare the original gear dimensions to the listed specifications for proper application matching.

Quality Assurance

Dorman markets this part as a standard replacement designed to directly replace the original equipment on specific vehicle years, makes, and models. For buyers searching Dorman 697-318 for Chevrolet C1500, GMC K2500, or other listed rear axle applications, the part is built to OE-style specifications for fitment-based differential repair.