Buy 2001 Ford F-150 5.4L Triton V8 CNG A/T RWD XLT Crew Cab Pickup Fleetside Coil Spring Damper. Base Springs, Stop, BOSS - OEM Ford Part # 5R3Z5K570AA (5R3Z-5K570-AA)

Bumper.
A component (mounted in the center of the spring) which cushions the spring as it is compressed. Auxiliary spring. Boot. Bushing stop. Coil Spring Damper. Knuckle. Lower Control arm. Shock. Spring seat stop. Suspension crossmember. Track bar. Trailing arm stop. Wedge.

Coil Spring Damper

Fits Mustang

Base, GT, BOSS 302.
Suspension Coil Spring - Repair or Replace
Your coil springs are not especially prone to failure, but if they have been cut, clamped, or heated to have the vehicle lowered, your 2001 Ford F-150 might benefit from replacing the strut springs. Excessive rust can make the springs more prone to failure. Contact your local Ford service department to have your suspension system evaluated.