The front coil springs set the XJ's nose height and ride quality — when they sag or snap, swapping in a fresh pair restores the stance, and the job needs more patience than special tools.
The XJ's front coils have been carrying a cast-iron 4.0L for decades, and they show it: a drooping nose, a Jeep that bottoms hard over dips, or a measured ride height an inch or more below stock. Broken lower pigtails are common too — the bottom coil rusts thin and cracks, and you'll hear it clunk over bumps before you see it. Replacement is a one-afternoon job per pair if the fasteners cooperate. The springs hold real stored energy, so the method matters: you control spring tension by lowering the axle, not by fighting the spring. Do one side at a time and the track bar and opposite spring keep everything located.
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| Part | Vendor | Est. price |
|---|---|---|
| Moog front coil spring set (stock height, pair) | RockAuto / Amazon | ~$110 |
| Crown Automotive replacement front coil (stock, each) | Quadratec / RockAuto | ~$60 |
| OME heavy-duty front coils (pair, ~2 in. over worn stock) | ARB / OME | ~$240 |
| Upper coil spring isolators (pair) | Crown / Omix-ADA | ~$25 |
| Front bump stops (replace while the spring is out) | Crown / Daystar | ~$30 |
Written and maintained by an AZ wheeler and driveway wrencher. Always cross-reference your factory service manual — modifications affect vehicle safety and warranty. Work at your own risk.