Out of stock
SKU: PTN6-1055
UPC: 636169198250
MPN: 6-1055
The 04-06 Ford F150 Leaf Spring Bushings from PROTHANE (MPN 6-1055) are engineered to restore critical rear suspension compliance in second-generation Super Duty and F-series trucks that have logged highway miles or sustained towing loads. Factory rubber bushings deteriorate over time, allowing excessive leaf spring articulation and creating noticeable clunking during acceleration or braking. These polyurethane replacement bushings address worn suspension geometry that compromises handling predictability and increases tire wear patterns.
PROTHANE's polyurethane compound delivers 400% greater durability than OEM rubber while maintaining the compliance needed for daily driving comfort. The red polyurethane material resists UV degradation, ozone cracking, and the thermal cycling common in chassis applications—critical for trucks exposed to temperature extremes. Steel-reinforced anchor points ensure the bushings remain positively indexed to the leaf spring perches, eliminating the slack that causes suspension geometry drift and uneven load distribution across the axle. The zinc oxide finish on metal components provides corrosion resistance in harsh road salt and moisture environments.
Mechanics and truck owners performing rear suspension rebuilds on 2004–2006 Ford F150 fullsize trucks will find this kit essential when addressing NVH (noise, vibration, harshness) complaints or preventive maintenance on vehicles with 80,000+ miles. Installation requires leaf spring removal and typically takes 1–2 hours per side with basic hand tools. This bushing kit directly improves steering response feel, reduces brake dive, and stabilizes the truck during payload transitions—measurable benefits for both work trucks and weekend haulers seeking factory-level ride quality without complete spring replacement.
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