Dorman 43-1285 rear leaf spring for the 1999-2004 Ford F-450 Super Duty supports the weight and payload of the vehicle at the rear axle. This Dorman leaf spring is a direct-fit replacement for these vehicles.
- Replaces leaf springs damaged by overloading, collision, cracking or corrosion
- Steel construction made to strict specifications for reliable performance
- 10 leaves with a load rate of 4375 lb
- Up-turned eye at each end, with bushings included
Quick facts
- Part: Dorman 43-1285 leaf spring
- Also called: leaf spring assembly
- Fits: 1999-2004 Ford F-450 Super Duty
- Position: Rear
- Material: Steel
- Condition: New
A sagging rear end, a cracked or broken leaf or heavy rust on the spring can mean it needs replacing. These signs alone do not prove the spring is at fault, since worn shackle hardware can also make the rear sit low.
Fits
These are 1999-2004 Ford F-450 Super Duty leaf springs, and the rear axle takes two, one on each side. Both springs are normally replaced together, and this listing is a single one.
Specifications
Fit and size
- Position: Rear
- Quantity per vehicle: 2
- Length: 25 in on both axes
- Length B: 30.75 in
- Arch length: 6.313 in
- Leaf width: 3 in
- Pack thickness: 3.988 in
Build and materials
- Material: Steel
- Leaf quantity: 10
- Load rate: 4375 lb
- Ends: up-turned eye at both ends
- Suspension grade: standard
- Axle modification needed: no
- Condition: New
In the box
One leaf spring with its bushings. Mounting hardware is not included, so plan on new mounting bolts.
Interchange: 43-1269 · 43-1345 · 43-1347 · 43-1459 · 43-1461 · 43-1465 · 43-1467 · 43-1285DAY · 043-1285-00
F81Z5560AA · YC3Z5560AB
Product information is for general reference and may contain errors. See our Disclaimer.
This part cross-references / interchanges with the following part numbers:
43-1285, 43-1269, 43-1345, 43-1347, 43-1459, 43-1461, 43-1465, 43-1467, F81Z5560AA, YC3Z5560AB, 43-1285DAY, 043-1285-00
Frequently Asked Questions
Is the Dorman 43-1285 a rear spring for the 1999-2004 Ford F-450 Super Duty?
Yes. Dorman 43-1285 is a rear leaf spring for the 1999-2004 Ford F-450 Super Duty, and the rear axle takes two, one on each side.
Does this leaf spring assembly come with bushings?
Yes. Dorman 43-1285 is one leaf spring with its bushings. Mounting hardware is not included.
How many leaves does the Dorman 43-1285 have, and what is its load rate?
It has 10 steel leaves and a load rate of 4375 lb. The leaf width is 3 in and the pack thickness is 3.988 in.
How can I tell if a rear leaf spring is cracked or collapsed?
A rear end that sits low, leans to one side or sags when loaded can be signs. A shop can inspect the springs for cracks or rust and measure them.
Does the Dorman 43-1285 replace the 43-1269 leaf spring?
Yes. 43-1269 is listed as an interchange number for the Dorman 43-1285, along with 43-1345 and 43-1347 and others on the Interchange line.
