Dorman 697-734 Differential Cover - Rear

Rear Differential Cover Protection

Dorman 697-734 is a rear differential cover built for trucks and vans that see towing, plowing, off-road use, and harsh road conditions. It replaces the thin OE stamped-steel cover with ductile iron construction and a corrosion-resistant powder-coated finish for added housing protection on the rear differential.

Compatible With 1997-2021 Ford F-150 rear limited slip differential applications, plus select Ford Transit, E-Series, Expedition, Navigator, Mark LT, Blackwood, and F-250 rear limited slip differential models.

Key Features

• Ductile iron construction for added rigidity and impact resistance
• Powder-coated finish for corrosion resistance
• Drain plug included for cleaner fluid service
• Two filler plugs to simplify differential filling
• Removable stainless steel Dorman logo plate for customization
• Direct replacement design for rear limited slip differential applications
• Includes the required bolts and plugs for the cover assembly

Detailed Description

This Dorman differential cover is engineered for rear axle protection where the factory cover can be vulnerable to dents, cracks, and leaks from rocks, debris, potholes, and winter road salt. The thicker ductile iron housing adds strength, while the powder-coated exterior helps resist corrosion in demanding service. The drain plug supports faster fluid changes, and the dual filler plug layout can make servicing easier when access to the factory fill point is limited. Dorman 697-734 is a practical upgrade for Ford F-150, Ford Transit, and other listed rear limited slip differential applications where durability and serviceability matter.

This part cross-references Ford BL3Z4033A and Spicer 10023539 for the same application.

Common Problems This Part Can Address

• Dented or cracked rear differential cover
• Gear oil leaks from impact damage
• Corrosion from salt, slush, and moisture exposure
• Difficult differential fluid filling through the factory housing plug
• Slow or messy fluid service without a drain plug

Installation Notes and Tips

Install on the rear differential only and verify limited slip differential fitment before ordering. Clean the housing sealing surface thoroughly before installation, and follow the vehicle manufacturer’s fluid specification and fill procedure. Because this cover does not include a gasket or seal, use the sealing method specified for the application.

Quality Assurance

Dorman manufactures this cover as a direct replacement component with application-specific fitment for listed Ford, Lincoln, and Transit rear limited slip differential vehicles. The ductile iron construction, powder-coated finish, and service features are intended to support long-term drivetrain protection and easier maintenance.