Dorman 43-901HD Leaf Spring Assembly - Rear

Dorman 43-901HD Leaf Spring Assembly

The Dorman 43-901HD leaf spring assembly is a heavy-duty rear suspension component built to support vehicle and trailer payload demands while helping maintain ride stability. With an 8-leaf design, steel construction, and included bushings, this leaf spring is built for applications that require consistent load support and suspension control.

Key Features

• Heavy-duty leaf spring assembly for rear suspension use
• Steel construction for strength and load-carrying performance
• 8-leaf design with a 5750 load rate
• Leaf width: 3 in.; pack thickness: 3.992 in.
• Up-turned eye attachment at both ends
• Black bushings included
• Helper spring: No
• Axle modification needed: No
• Package contents: 1 leaf spring

Detailed Description

The Dorman 43-901HD is a rear leaf spring assembly engineered for suspension systems that rely on a traditional multi-leaf design to carry weight and maintain proper ride height. Its steel construction, 25.125 in. length axis, 30.625 in. B length, and 5.25 in. arch length provide the dimensional profile needed for the correct application. This part number, 43-901HD, is also referenced as Dorman OE Solutions 43-901HD and cross-references 43-901HDDAY and 043-5099-00 for the same application. For buyers searching for a rear leaf spring assembly for heavy-duty truck or trailer suspension service, 43-901HD is a direct part-number match to verify against the vehicle’s original specifications.

What It Helps Address

• Sagging rear suspension
• Reduced payload support
• Uneven ride height at the rear axle
• Excessive rear-end bounce or instability
• Worn or cracked leaf spring components

Installation Notes and Tips

Confirm the vehicle’s original leaf spring dimensions, axle orientation, and end attachment style before ordering. This assembly uses up-turned eye ends and is specified for rear axle orientation. Bushings are included, while mounting hardware is not listed as included. Verify the part number 43-901HD against the existing spring and suspension measurements before installation. Compatible With select make/model applications only; review the vehicle-specific fitment data for exact coverage. Searches such as rear leaf spring assembly for heavy-duty suspension, steel leaf spring replacement, and Dorman 43-901HD leaf spring assembly are commonly used when sourcing this part.

Quality Assurance

Dorman OE Solutions parts are built to match application-specific replacement needs with attention to fit, form, and function. The 43-901HD leaf spring assembly follows the listed construction and dimensional specifications for accurate replacement selection.