SKU: PTN6-1208BL
MPN: 6-1208BL
The PROTHANE 66-79 Ford F100 Radius Arm Bushings 4WD (part number 6-1208BL) are polyurethane suspension components engineered to restore and upgrade the steering geometry and handling characteristics of full-size Ford trucks from 1966 through 1979. Radius arm bushings are critical pivot points in the front suspension that control longitudinal movement of the axle housing; worn original rubber bushings allow excessive play that degrades steering response, alignment stability, and accelerates tire wear. PROTHANE's polyurethane formulation offers significantly greater durability and reduced compliance compared to factory rubber, making this kit essential for trucks used in off-road recovery, towing, or serious daily driving where suspension precision matters.
This four-wheel-drive bushing kit is specifically calibrated for the geometry and mounting points of the F100 chassis, ensuring proper fitment and suspension performance without modification. The black polyurethane compound resists cracking, UV degradation, and ozone exposure far longer than aged rubber—critical in environments where trucks see extended sun, humidity, or salt exposure. Installation requires disconnecting the radius arm at both the frame and axle mounting points, a straightforward procedure within reach of competent DIY mechanics with basic suspension tools. The bushings themselves are approximately 3.5 inches in the primary load-bearing dimension, sized to match OEM specifications precisely.
Buyers restoring or upgrading 1966–1979 Ford F100 4WD trucks will find this bushing set addresses a common failure point that affects both ride quality and handling safety. Whether the truck is a daily driver, a light-duty hauler, or a weekend project vehicle, replacing degraded radius arm bushings with PROTHANE polyurethane components restores the crisp feel of a properly functioning suspension and eliminates the vague, wandering steering caused by excessive bushing wear. This kit is compatible with the full-size Ford truck platform across the stated model years and is a foundational part of any serious suspension refresh or front-end rebuild.
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