Dorman 43-1687 rear leaf helper spring for the 2008-2016 Ford F-250 Super Duty and other vehicles adds load support to the main leaf spring.
- Part of the Dorman OE Solutions line
- Replaces a helper spring that has failed from rust and fatigue
- Steel construction made for long service life
- Maximum load rating of 450 pounds
Quick facts
- Part: Dorman 43-1687 leaf helper spring
- Fits: the 2008-2016 Ford F-250 Super Duty and other vehicles
- Position: Rear
- Material: Steel
A rear end that sags under a load, a cracked or heavily rusted leaf, or a broken leaf can mean the helper spring has worn out. These signs alone do not prove this spring is the problem, since worn rear shocks can also change how the truck rides.
Fits
It is a direct replacement for the original spring on the 2008-2016 Ford F-250 Super Duty and the 2008-2016 Ford F-350 Super Duty, and each of them takes two. This listing is one spring, so the other one on the rear axle is normally replaced at the same time.
Specifications
Fit and size
- Position: Rear
- Quantity per vehicle: 2
- Length: 41.625 in
- Width: 3 in
- Thickness: 0.473 in
Build and materials
- Material: Steel
- Maximum load rating: 450 pounds
- Leaf spring load increase strength: 450 pounds
In the box
One leaf helper spring. Mounting hardware is not included, so plan on new hardware, because the old pieces may not be reusable.
Interchange: 43-1903 · 43-1687DAY · 043-1687-00
Product information is for general reference and may contain errors. See our Disclaimer.
This part cross-references / interchanges with the following part numbers:
43-1903, 43-1687DAY, 043-1687-00
Frequently Asked Questions
Does the Dorman 43-1687 helper spring fit the 2008-2016 Ford F-250 Super Duty?
Yes. Dorman 43-1687 is a rear leaf helper spring for the 2008-2016 Ford F-250 Super Duty, and it also fits the 2008-2016 Ford F-350 Super Duty.
Does Dorman 43-1687 come with mounting hardware?
No. This listing is one leaf helper spring, and mounting hardware is not included, so plan on new hardware.
How much load is this steel leaf helper spring rated for?
The maximum load rating is 450 pounds, and the leaf spring load increase strength is also 450 pounds. The steel spring is 41.625 inches long, 3 inches wide and 0.473 inch thick.
How can I tell if a rear leaf helper spring has rusted out?
A visual check can show cracks, heavy rust or a broken leaf. While driving, a rear end that sags under load is another sign you may notice.
Does Dorman 43-1687 replace part number 43-1903?
Yes. 43-1903 is an interchange number for Dorman 43-1687, along with 43-1687DAY and 043-1687-00.
