Leaf Spring Assembly.
A complete Leaf Spring Assembly containing the master Leaf Spring and graduated Leaf Springs.

Leaf Spring

Fits F-450 Super Duty

F450.
Suspension Leaf Spring - Repair or Replace
Your leaf springs are not especially prone to failure, but excessive rust can make them more prone to failure. Contact your local Ford service department to have the suspension system in your 1987 Ford F-150 evaluated and have the leaf springs replaced if necessary.