Dorman - OE Solutions Leaf Helper Spring P/N:43-1749HD
Dorman 43-1707 rear leaf helper spring for the 2008-2016 Ford F-350 Super Duty and other vehicles adds load-carrying support to the rear suspension.
A rear end that sags under load, or a spring that looks cracked or rusted, can mean this helper spring is worn, though the main rear leaf springs or the rear shocks can be behind the same signs.
It is a direct replacement for the 2008-2016 Ford F-350 Super Duty and the 2011-2016 Ford F-450 Super Duty. This listing is one spring; the other side of the rear axle is normally done at the same time.
Fit and size
Build and materials
One leaf helper spring; the rear axle takes two. Mounting hardware is not included, so plan on new hardware rather than reusing the old.
Interchange: 43-1863 · 43-1961 · 43-1707DAY
7C345560DE · 7C345A975D · 7C345A975DE
This part cross-references / interchanges with the following part numbers:
Does the Dorman 43-1707 rear leaf helper spring fit the 2011-2016 Ford F-450 Super Duty?
Yes. Dorman 43-1707 is a rear leaf helper spring for the 2011-2016 Ford F-450 Super Duty, and it also fits the 2008-2016 Ford F-350 Super Duty.
Does the Dorman 43-1707 leaf helper spring come with mounting hardware?
No. The Dorman 43-1707 listing is one steel leaf helper spring, and mounting hardware is not included, so plan on getting new hardware.
What load rating does this rear leaf helper spring have?
This rear leaf helper spring has a maximum load rating of 675 lb. It measures 41.625 in long, 3 in wide and 0.59 in thick.
What can a worn rear leaf helper spring look like?
A cracked or heavily rusted spring, or a rear end that sags when the truck is loaded, can mean wear. A shop can inspect the rear suspension to confirm.
Which other part numbers does the Dorman 43-1707 leaf helper spring replace?
Dorman 43-1707 is listed as a replacement for 43-1863, 43-1961 and 7C345A975D, among other numbers shown on the Interchange line.
No reviews yet — be the first to review this product.
Write a Review
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.