Dorman 43-1749 rear leaf helper spring for the 2008-2016 Ford F-450 Super Duty and other vehicles adds load support to the rear suspension.
- Part of the Dorman OE Solutions line
- Adds 675 pounds of leaf spring load strength, with a 675-pound maximum load rating
- Steel construction made for long service life
- Replaces an original leaf helper spring that has failed from rust and fatigue
Quick facts
- Part: Dorman 43-1749 leaf helper spring
- Fits: 2008-2016 Ford F-450 Super Duty and other vehicles
- Position: Rear
- Material: Steel
- Condition: New
A rear end that sags under load, a rough ride or a rusted or cracked spring can mean a leaf helper spring has worn out. These signs alone do not prove this spring is the problem, since worn rear shocks can give a similar ride. This listing is one spring, and both sides of the axle are normally replaced together.
Fits
It fits the 2008-2016 Ford F-450 Super Duty and the 2008-2016 Ford F-550 Super Duty, with one spring on each side of the rear axle.
Specifications
Fit and size
- Position: Rear
- Quantity per vehicle: 2, one on each side of the rear axle
- Length: 43.25 in
- Width: 3 in
- Thickness: 0.59 in
Build and materials
- Type: Leaf helper spring
- Material: Steel
- Maximum load rating: 675 lb
- Load increase strength: 675 lb
- Condition: New
In the box
One leaf helper spring. Mounting hardware is not included, so plan on new hardware, since the old pieces may not be reusable.
Interchange: 43-1839 · 43-1693 · 43-1695 · 43-1737 · 43-1743 · 43-1805 · 43-1811 · 43-1825 · 043-1749-00
Product information is for general reference and may contain errors. See our Disclaimer.
This part cross-references / interchanges with the following part numbers:
43-1749, 43-1839, 43-1693, 43-1695, 43-1737, 43-1743, 43-1805, 43-1811, 43-1825, 043-1749-00
Frequently Asked Questions
Is the Dorman 43-1749 rear leaf helper spring right for the 2008-2016 Ford F-450 Super Duty?
Yes. Dorman 43-1749 fits the 2008-2016 Ford F-450 Super Duty and the 2008-2016 Ford F-550 Super Duty, with one spring on each side of the rear axle.
Does the Dorman 43-1749 leaf helper spring come with mounting hardware?
No. Dorman 43-1749 comes as one leaf helper spring, and mounting hardware is not included, so plan on new hardware.
What load is this leaf helper spring rated for?
This leaf helper spring has a maximum load rating of 675 pounds and a load increase strength of 675 pounds.
How can I tell if a rear leaf helper spring has failed?
Signs can include a rear end that sits low under load, a rough ride, or visible rust or cracks on the spring. A shop can confirm whether the spring needs replacing.
What size is the Dorman 43-1749 leaf helper spring?
This leaf helper spring is 43.25 inches long, 3 inches wide and 0.59 inch thick, and it is made of steel.
