Symptoms
Daylight through the floor, wet carpet, a tub that shifts on the frame, or body mounts you can push a screwdriver through. The buyer's guide points to the floor, rockers, rear corners and the area under the roll bar.
The fix, step by step
- Strip the interior and lift the carpet.
- Cut back to solid metal, then trim the replacement pan to overlap or butt-fit, and plug-weld it along the factory seams.
- Seam-seal and paint the inside and out.
- Replace the rubber body-mount bushings at the same time: loosen all six mount bolts, jack the tub a little at each mount, and swap the upper and lower bushings.
- If a frame-side mount bracket has rotted, weld in a new one before refitting the tub.
Tools & part numbers
- Cut-off wheel
- spot-weld drill
- MIG welder
- panel clamps
- seam sealer
- weld-through primer
- floor jack and wood block.
Where to buy the parts
Key Parts 0479-221 front floor pan, 76–86 CJ-7/CJ-8Quadratec (Key Parts) ↗Amazon ↗
Key Parts 1/2 floor pan, 76–95 CJ-7/CJ-8/YJQuadratec (Key Parts) ↗Amazon ↗
Crown J5462447 upper body mount bushing, 76–86 CJ-5/CJ-7/CJ-8Quadratec (Crown Automotive) ↗Amazon ↗
Rust Buster RB1007 body-to-frame mount, 76–86 CJ-7 (weld-in)Quadratec ↗Amazon ↗
Hunting a used or discontinued part? Search eBay Motors for Jeep CJ-7 parts →
Rated for a competent home mechanic with a decent tool kit. Confirm torque figures, fluids and procedures against the factory service manual for your VIN, support the truck on stands rather than a jack, and work at your own risk (disclaimer). Some parts links are affiliate links, which pay us a small commission at no cost to you.