Track Bar Bushings

What the track bar does

On a solid axle with coil springs, the track bar, also called a panhard rod or track arm, locates the axle side to side beneath the vehicle. It is anchored to the frame at one end and to the axle at the other, with a bushing in each mount. When those bushings crack or compress, the axle can shift sideways, which feels like vague steering, wandering on the highway, clunks over bumps or a death wobble type of shake.

Rubber versus polyurethane

Factory bushings are rubber, which isolates noise and vibration but wears out and can deform under load. Polyurethane bushings are firmer, resist compression and typically last longer, and they keep the axle position more consistent. The trade-off is that polyurethane can transmit more noise and harshness and may squeak without proper lubrication.

• Rubber: quiet and compliant, but softer.
• Polyurethane: firmer and more durable, with some added vibration.
• Durometer rating: a higher number means a harder bushing, so look at what the maker lists.

Some kits include metal sleeves and grease, which matter for fit and long-term quiet operation.

Choosing the right set

Sets are sold by vehicle, axle and position. A listing may specify front or rear and refer to a track arm or track rod, and may include inner sleeves for specific bolt sizes. Count the bushings needed, since the bar has two ends and some designs use more than one per end. Confirm fitment for your exact year, make and model, and for lifted vehicles check the lift kit maker's instructions, because aftermarket track bars often use their own bushings or heim joints.

Installation notes

Removing the old bushing usually takes a press, a bushing driver or careful use of a torch-free method such as a socket and vise. Torque the track bar bolts with the vehicle at ride height and the suspension loaded, not hanging, because tightening at full droop can preload the rubber and cause early wear. Use the specified lubricant on polyurethane parts and inspect the bar and brackets for cracks while the bar is out. After the job, check that the axle is centered and have the alignment checked. If you are unsure, a suspension shop can handle it.

Bushing work often exposes other wear. While the track bar is off, look at the frame bracket and axle bracket for elongated holes, cracks and weld damage, and check the bolts for stretched threads. Replace worn hardware with the grade the manufacturer specifies. If your vehicle has been lifted, a track bar relocation bracket or adjustable bar helps recenter the axle, and the bushings must match the new parts. Test for play by having a helper turn the steering wheel while you watch the bar ends and bushings. After installation, drive on a familiar road and see whether the steering feels more settled. Re-check torque after a few hundred miles, because polyurethane can settle slightly. If vibration or wander persists, inspect the steering stabilizer, tie rod ends and wheel balance as well.