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Track bar bushings for your Bmw 340I Gt Xdrive start at $32.95, and AutoBuffy stocks 1 options from Delphi. The track bar bushing is a rubber or polyurethane sleeve that cushions the track bar's mounting points, keeping the front axle centered under the frame. When it wears out, the axle shifts laterally, causing unpredictable handling and accelerated tire wear.
The main decision is material: OE-style rubber bushings restore factory feel and are quieter, while polyurethane bushings last significantly longer and reduce flex but can transmit more NVH. You should also confirm whether you need the frame-side bushing, the axle-side bushing, or a kit that covers both mounting positions.
| Option | Best for | What you get |
|---|---|---|
| OE Rubber Replacement | Daily drivers seeking factory ride quality and quiet operation | Soft durometer rubber that absorbs vibration and mounts to stock hardware without modification |
| Polyurethane Upgrade | Lifted trucks, off-road use, or vehicles with chronic bushing wear | Firmer material with tighter tolerances that resists tearing and petroleum-based fluids far longer than rubber |
| Frame-Side Bushing Only | Partial replacement when axle-side bushing is still serviceable | Single bushing sized for the frame bracket bore; lower cost when only one end is worn |
| Complete Kit (Both Ends) | High-mileage vehicles or any time the track bar is fully removed | Matched pair covering both mounting points so wear rates stay consistent and no return labor is needed |
Raise the vehicle safely, support the axle so it hangs at ride height, and remove the track bar bolts at both mounting points. Press or drive out the old bushings using a C-clamp or bushing press, clean the bores, and press in the new bushings before reinstalling the bar with the suspension at ride height to avoid pre-loading the bushings in a bound position. Tighten the mounting hardware to the manufacturer's specification with a torque wrench, then schedule a wheel alignment before extended driving.