Dana Spicer 45720 Drive Axle Shaft Bolt - Rear

Drive Axle Shaft Bolt for Dana Axles

The Dana Spicer FSGR 45720 drive axle shaft bolt is a hex-head, Grade 8 fastener built for rear axle service on a wide range of Ford, Dodge, Chevrolet, and GMC heavy-duty applications. It uses a self-locking design and the specified thread and length dimensions to support secure axle shaft retention in Dana 60 and Dana 70 setups.

Compatible With rear axle service on Ford E-250, Ford E-350 Super Duty, Ford F-350 Super Duty, Dodge Ram 2500, and Dodge Ram 3500 applications where the Dana axle configuration matches the listed fitment.

Key Features

• Brand: Dana Spicer FSGR
• Part number: 45720
• Grade 8 construction for demanding driveline use
• Hex head for standard service tooling
• Self-locking design for added retention
• Thread size: .437-14
• Length under head: 1.375 in.
• Rear axle application for Dana 60 and Dana 70 configurations

Product Details

Spicer FSGR hardware is built around OE-style dimensional control for driveline service. This 45720 axle shaft bolt is specified for rear axle use on vehicles such as the Ford E-250, Ford E-350 Super Duty, and Ford F-350 Super Duty, along with Dodge Ram 2500 and Ram 3500 models that use the listed Dana axle setups. The part number 45720 is also referenced in service listings under related Spicer numbers for the same application.

This part cross-references Spicer 43124 and DS45720 for the same application.

What It Helps Address

• Loose or damaged axle shaft bolt threads
• Axle shaft retention issues during rear axle service
• Hardware replacement during Dana 60 or Dana 70 axle repair
• Service needs on Ford, Dodge, Chevrolet, and GMC rear axle assemblies
• Restoration of correct fastener specification after driveline maintenance

Installation Notes and Tips

Verify axle type, full-float configuration where required, and rear position before ordering. Match the thread size, under-head length, and head style to the original fastener specification. Clean the mating threads and inspect the axle shaft and surrounding hardware for wear before installation. Use the vehicle’s service procedure and torque specification for the Dana axle assembly.

Quality Assurance

Spicer ring and pinion and related driveline components are engineered and tested to meet original equipment specifications, with dimensional standards aligned to Dana requirements used by OEMs for many years. Part number 45720 is built for the listed rear axle applications and OE-style service fitment.