📋 Quick Facts
Time
20-40 minutes per side
Difficulty
Easy
Tools
4 needed
Cost to DIY
$25-90
A worn sway bar end link causes a clunk over bumps and reduced cornering stability. DIY replacement is a 20-40 minute job per side - one of the easiest suspension repairs.
🛠 What You'll Need
- New sway bar end links (sold in pairs) (sway bar end link on Amazon)
- Metric wrench set (16mm-19mm common) (metric wrench set on Amazon)
- Allen / hex bit set (5mm or 6mm; many studs have a hex socket on the end) (allen bit set on Amazon)
- Floor jack and jack stands (jack stand kit on Amazon)
⚠ When NOT to DIY thisA failing sway bar end link is rarely a safety emergency - the bar still works at low speeds, just with more body roll. But a snapped link can hit other suspension components. Replace within a few weeks of noticing the clunk. Some end links use a special hex key approach where the stud has an Allen socket in the end (so you can hold it while spinning the nut). If your end link is corroded solid and the stud spins, you may need to cut the stud with a Sawzall.
✅ Before You Start - Checklist
- Park on level, solid ground (no slopes, no soft dirt)
- Engine is at the correct temperature (cold or warm as specified)
- All tools and parts on hand BEFORE you begin
- Owner's manual nearby for torque specs and locations
- Safety: gloves, eye protection, hood propped open
📝 Step-by-Step Instructions
- Loosen the lug nuts a half-turnOn the ground, crack the lugs loose.
- Lift the front of the car and remove the wheelJack stands on the chassis frame, take the wheel off for better access.
- Locate the end linkVertical link connecting the sway bar (anti-roll bar) to the suspension strut or lower control arm. Has a nut at top and bottom.
- Identify the wrench size and stud retentionMany studs spin with the nut - to stop them, the manufacturer puts a 5mm or 6mm Allen socket in the end of the stud. Use the Allen bit to hold the stud while the wrench spins the nut.
- Loosen the top nut firstPlace the Allen bit in the top of the stud (if applicable) to hold it. Use a 17mm or 19mm wrench to spin the nut counter-clockwise.
- If the stud spins endlesslyThe internal bushings are toast. You may need to grip the stud with vise grips (will damage threads) or cut the stud with a Sawzall or reciprocating saw to free it.
- Remove the top nut and pull the stud freeSlide the end link stud out of the strut or control arm mounting hole.
- Loosen and remove the bottom nutSame procedure for the bottom mounting point on the sway bar.
- Remove the old end linkPull it free from both mounting points.
- Compare old and new end linkLength, stud thread size, and bushing/joint type must match.
- Install the new end linkInsert both studs into their mounting holes. Hand-thread the new nuts.
- Torque the nuts to specTypically 30-55 ft-lb depending on car. Hold the stud with the Allen bit if necessary. Both nuts should be snug and lock-washered (most are nyloc).
- Reinstall the wheel, lower the car, torque lugsMount the wheel, lower, torque lugs in a star pattern to spec.
- Test driveDrive over uneven roads. The clunk should be gone. If it returns, recheck end link torque and inspect for worn sway bar bushings (the rubber-mounted clamps along the bar itself).
✅ After You Finish - Verify Checklist
- No tools left in the engine bay or under the car
- Test the system you worked on (start, drive, check, etc.)
- Look for leaks or drips after 5 minutes of running
- Record the date and mileage in your service log
- Recycle or properly dispose of any old parts/fluids
🔗 Related Guides
❓ Frequently Asked Questions
How do I know my sway bar end link is bad?
Clunk or knock over bumps, especially small/sharp bumps and parking lot speed. Body roll feels exaggerated. With the car off the ground, grab and shake the end link - looseness or play in the ball joint means replacement.
Do I need to replace both sides?
Recommended. They wear at similar rates. End links are usually sold in pairs and the second side adds only 20 minutes of work.
Do I need an alignment after replacing end links?
No. End links do not affect alignment angles. They only carry vertical force between the sway bar and the suspension.
The stud spins with the nut - how do I get it off?
Most end links have an Allen socket in the end of the stud - insert a hex bit to hold the stud while spinning the nut. If that fails, grip the stud with vise grips (damages threads) or cut the stud with a saw.
Do I need to replace the sway bar bushings too?
Different parts. Bushings are the rubber clamp inserts along the bar itself. Inspect them - if they are cracked or oily, replace separately ($10-20 part). Often replaced together.
How long do sway bar end links last?
60,000-100,000 miles is typical, but in salty/snowy climates they can fail in 30,000. The boot tearing leads to fast bearing wear.