Dorman 43-721HD rear leaf spring for the 1980-1997 Ford F-350 holds the weight and payload of the vehicle and supports suspension performance. Also called a leaf spring assembly, this Dorman leaf spring replaces springs damaged by overloading, collision, cracking or corrosion.
- Heavy-duty grade leaf spring with 12 leaves
- Load rate of 4500 pounds
- Up-turned eye at both ends, with bushings included
- Steel construction made to strict specifications
Quick facts
- Part: Dorman 43-721HD leaf spring
- Also called: leaf spring assembly
- Fits: 1980-1997 Ford F-350
- Position: Rear
- Material: Steel
- Condition: New
A cracked or broken leaf, heavy corrosion or a rear end that sits low can be signs of a worn spring. These signs alone do not prove the spring is the problem, since worn rear shock absorbers can also give a bouncy ride. Replace the springs on both sides together; this listing is one spring.
Fits
It is a direct replacement for the 1980-1997 Ford F-350 in the rear position.
Specifications
Fit and size
- Position: Rear
- Quantity per vehicle: 2
- Length: 26 in
- Arch length: 4.75 in
- Leaf width: 2.25 in
- Pack thickness: 4.812 in
- Load rate: 4500 lb
- Leaf quantity: 12
Build and materials
- Material: Steel
- Suspension grade: Heavy duty
- Ends: Up-turned eye at both ends
- Bushings: Included
- Mounting hardware: Not included
- Axle modification: Not needed
- Condition: New
In the box
One leaf spring with bushings. Mounting hardware is not included, so plan on new bolts, since the old ones may not be reusable. This listing holds one spring; the 1980-1997 Ford F-350 takes two.
Interchange: 43-809HD · 43-721HDDAY · 043-0721-00HD
This part cross-references / interchanges with the following part numbers:
43-721HD, 43-809HD, 43-721HDDAY, 043-0721-00HD
Frequently Asked Questions
Is this a rear leaf spring for the 1980-1997 Ford F-350?
Yes. Dorman 43-721HD is a rear leaf spring for the 1980-1997 Ford F-350.
Are bushings included with this heavy-duty leaf spring?
Yes, Dorman 43-721HD comes with its bushings. Mounting hardware is not included.
What load rate does this leaf spring have?
This rear leaf spring has a load rate of 4500 pounds and 12 leaves, in a heavy-duty suspension grade.
How can I tell if a rear leaf spring is worn out?
Look for cracked or broken leaves, heavy rust, or a rear end that sits low or leans to one side. These can mean the spring is worn, and a shop can confirm it.
Does this leaf spring need any axle modification to install?
No. This spring needs no axle modification, and it has an up-turned eye at each end.
