Suspension Bushing

They are found in control arms, anti-roll bar mounts, subframes, engine mounts and many other places. Hydraulic bushings contain fluid to damp vibrations better. Rubber is soft and quiet, while polyurethane is firmer and gives more precise handling but passes more vibration into the cabin. Many bushings are pressed into the arm and need a press to replace.

The rubber twists and flexes as the parts move, so there is no metal-to-metal contact.

Cracked or soft bushings cause clunks, vague steering, pulling under braking and uneven tyre wear. Bushings age with time, heat and oil contamination, so older cars often show worn bushings even with low mileage.