This repair guide will show you how to replace the sway/stabilizer bar bushings and the sway bar links in the front of a Mercedes-Benz C Class W203 or a CLK Class W209. Mercedes-Benz sway bar bushings and links need to be replaced around 100,000 miles. As they wear and tear, they tend to cause ratling and clunks when driving at low speeds. The primary purpose of the sway bar is to avoid body roll. Because the sway bar is connected to the suspension, every time you hit a bump, it’s not only the strut or shock that takes the hit but also the sway bar bushings and links. Wonder how bad sway bar bushings look? Here is an example:
Picture of a damaged sway bar bushing, visible to the naked eye.
How do you know you need your sway bushings and links replaced?
You hear knocking, clunks, and rattling noises coming from the front of the car when going over bumps. While sometimes you can visibly see a damaged sway bar bushing or link, this is not always the case. When the sway bushing or links have played due to wear, the sway bar moves excessively, causing clunks and rattles. It could also be that even though the bushings seem intact but the integrity of the rubber bushing is compromised, and thus it needs to be replaced. You will know you need them as the car feels less stable, especially during cornering, and is noisy when driving bumpy roads.
Too many times, the sway bar bushings get misdiagnosed. The front struts get replaced to cure the clunking and rattling. Replacing the sway bar bushing significantly improves the ride quality and is much cheaper and often the problem. So before you let your mechanic replace your struts/shocks, have them check these bushings first. Since this is an easy and cheaper task, you may want to replace these bushing as a wear and tear item at around 100k miles.
Parts & Cost
Here is a list of the parts you will need. You can CLICK on any of them if you need any parts and check the current price on Amazon.
- Sway Bar Rubber Bushings x2 (FRONT)
Part Numbers 203 323 20 85 2033232085
- Sway Bar Link Rods x2 (FRONT)
Mercedes-Benz Part Numbers: 203 320 29 89 ; 2033202989 A203 320 29 89 ; A2033202989 ; A 203 320 29 89
The cost of replacing the sway bar bushings and links on a Mercedes-Benz.
Using our free instructions, you can replace the sway bar bushings and links on your Mercedes-Benz for under $100. You can order a sway bar kit from Amazon. Click the link below to order your sway bar bushings and links for under $100.
W203 C230 C240 C320 C32 AMG
W209 CLK320 CLK500 CLK55
Years: 2001 2002 2003 2004 2005 2007
Step by Step Instructions with Pictures
Replacing the sway bar bushings on the C Class W203 or the CLK W209 is easy. If you can change your oil, you can also do this job. The difficulty level is around 4, and you may need up to 4 hours. A good mechanic with the right tools can finish this job in less than an hour.
To complete this job, you will need the following:
- Torx Bit T-Socket Set
You can get a set on Amazon for under $20; see this set, for example.
- Combination Wrench Set
Which you most likely have. If you don’t, check out this set.
- Get your car on level ground and loosen the lug nuts before you raise the vehicle.
- Raise the car using an aluminum jack if you have one or your car’s jack stand. Make sure to put jack stands under the vehicle. Always use jack stands.
- Remove the front wheel.
- Remove the two bolts on the sway bar link. You may have to hold the bolt so it doesn’t spin as you remove the nut. Using some WD-40 on the bolts helps a lot.
- Remove the two bolts that hold the sway bar bushing bracket in place. To get to these bolts, you may need to remove the undercarriage cover by removing several 8 mm bolts that hold it in place.
- Slide out the old sway bar bushing and install the new one.
- Install the new sway bar link.
- Reinstall in reverse order.
You will need a torque wrench to tighten the bolts to the manufacturer’s specifications.
- The nut on the sway bar links, where they connect to the stabilizer bar and strut.
55 Nm for the M10x1.5 bolts; 100 Nm the M12x1.5 bolts
- Two Torx bolts on the bracket that holds the rubber sway bar bushing.
We hope you found these instructions helpful. Please take a minute to leave a comment t. Let us know if you have any tips or tricks for this job.