The 1999-2003 Ford Super Duty leaves the factory on rubber body mounts that compress, dry out, and crack after a decade of heat cycling, towing, and weather exposure. As the rubber breaks down, the cab sags, and the cab drifts out of alignment with the bed. The damage doesn’t stop at the body: worn mounts transmit chassis vibration directly into the radiator, hoses, and surrounding cooling stack, accelerating wear on components well past the bushings themselves. The Mishimoto Silicone Body Mounts replace the worn-out rubber with a complete six-bushing set engineered to restore ride height, pull body lines back into alignment, and absorb the noise, vibration, and harshness (NVH) the factory mounts let through.----Each bushing is molded from premium silicone - a material that retains its resilience for the life of the truck and does not harden, dry-rot, or develop the dry squeak that aftermarket urethane is known for. The steel cup carrying every bushing is dual coated to resist the corrosion that destroys factory mounts from the inside out, and every fastener in the included hardware kit is finished in Dacromet for the same level of long-term protection. A keyed cap anti-rotation design holds the upper and lower cups are held in place by the cup retainer while you insert the bolt and torque from above, turning a job that traditionally requires two people into a one-person install.----Direct fit for the 1999-2003 Ford Super Duty Regular and Extended Cab - six bushings positioned for the OEM mount points with no drilling or modification required. Crew Cab applications require eight bushings and are covered under a separate part number. Backed by the Mishimoto Lifetime Warranty, your investment is protected long after install day.