Help your truck carry its weight and payload the way it should with the Dorman leaf spring, part number 43-1985. It is a direct-fit rear replacement for the 2015-2020 Ford F-150 and 2015-2020 Ford Lobo. Leaf springs that work properly support the load of the vehicle and are essential to suspension performance and passenger comfort.
A rear that sags or sits unevenly, a truck that leans to one side, cracked or broken leaves, and bottoming out under load are signs that a leaf spring may need replacing. If a worn leaf spring is the cause, this unit replaces it at the rear axle. Leaf springs work as a left/right pair, so replacing both sides together is recommended for balanced support. For the correct fasteners and whether they can be reused, consult the vehicle service information. Engine and trim details for each application are in the Buyer's Guide tab.
Interchange: 43-1985DAY · 43-1985HUS · 043-1985-00
431985DAY · 431985HUS · 043198500 · FL345560EA · FL345560ED · FL345560EE · FL345560EF · FL34EA · FL34ED · FL34EE · FL34EF · FL3Z5560D
This part cross-references / interchanges with the following part numbers:
Which trucks does this leaf spring fit?
It is a direct-fit rear replacement for the 2015-2020 Ford F-150 and the 2015-2020 Ford Lobo. Engine and trim details are in the Buyer's Guide tab.
What does a leaf spring do?
Leaf springs hold the weight and payload of the vehicle. They are essential to suspension performance and passenger comfort.
What are signs a leaf spring may need replacing?
Common signs include a sagging or uneven rear, a truck that leans to one side, cracked or broken leaves, and bottoming out under load. Diagnose the cause before you replace parts.
Should I replace both rear leaf springs at the same time?
Yes, replacing both sides together is recommended. This helps the rear of the truck sit level and lets both springs share the load evenly.
Is this leaf spring assembly a direct replacement for the original?
Yes. Dorman designs it to install like the original leaf spring on the listed applications and builds it from quality materials to strict specifications.
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.
