Sway Bar Links and Bushings: Small Parts That Make a Big Difference
Sway bar end links and bushings are among the least expensive suspension components on a vehicle — yet when they wear out, the handling difference is surprisingly noticeable. Here's what they do and when to replace them.
What Does a Sway Bar Do?
The sway bar (anti-roll bar) is a spring steel bar connecting the left and right suspension on the same axle. When one side of the suspension compresses (like in a corner), the sway bar transfers some of that load to the opposite side, reducing body roll. A stiffer sway bar reduces lean in corners but transmits more road feel.
Sway Bar End Links
End links are the small connecting rods between the sway bar ends and the suspension strut or control arm. They transfer the anti-roll force from the bar to the wheel. End link ball joints or bushings wear out over time, creating looseness.
Sway Bar Bushings
Rubber or polyurethane bushings clamp the sway bar to the vehicle frame at two points. These bushings wear and crack over time, allowing the bar to move in its mounts. Worn bushings are often the source of a thumping or clunking sound from the chassis on rough roads.
Symptoms of Worn Sway Bar Components
- Clunking or rattling noise over bumps, speed bumps, or while turning
- Increased body roll in corners compared to normal
- Loose or wandering feel at highway speeds
- Knocking sound when pulling out of a parking spot (steering full lock)
Sway bar end links are generally inexpensive and quick to replace. If you hear clunking over bumps, this is often the first thing to check. Don't confuse it with more serious strut or control arm issues.
Replacement and Upgrade Options
OEM rubber bushings are the standard replacement. Polyurethane bushings last longer but transmit more noise and vibration into the cabin. For daily drivers, OEM rubber is usually the right choice. If you're upgrading your handling or occasionally track the vehicle, polyurethane makes more sense.
Ready to Schedule Service in Newbury Park?
CAL Tire and Auto Repair is here to help. Our ASE-certified technicians serve drivers across Newbury Park, Thousand Oaks, Westlake Village, Camarillo, Agoura Hills, and Simi Valley. Visit us at 1180 Newbury Rd or call to speak with a service advisor.
Frequently Asked Questions
Can I drive with a broken sway bar link?
You can in a pinch, but handling will be noticeably different — especially on highway ramps and emergency maneuvers. Body roll increases and vehicle control is reduced. Replace as soon as possible.
How do I tell if the clunking is from the sway bar or the struts?
Sway bar noise is most prominent on turns and uneven pavement at low speed. Strut noise tends to be more pronounced on bumps at all speeds. The most reliable diagnosis is a physical inspection on a lift.
Do I need an alignment after replacing sway bar components?
Typically no — sway bar links and bushings don't affect alignment angles. However, if any steering or control arm components were disturbed during repair, a check is advisable.