How to

How to replace a suspension compliance bush correctly

Share Resource:

Resource Highlights

Incorrectly fitting a compliance bush can lead to steering issues, premature wear, and poor vehicle handling – even if your wheel alignment was perfect before you started.

Phil, our Delphi expert explains what a compliance bush is, why orientation matters, and how to press it in properly. Watch this video to learn how to:

Identify a compliance bush and understand how it works
Remove the suspension arm and press out the old bush
Mark and align the new bush for correct orientation
Efficiently press the bush into the arm and housing
Refit the arm, torque components, and finish with wheel alignment and an ADAS check

Maintenance Solutions Steering & Suspension How to Distributors Shop Owners Technicians 1 min read

What is a compliance bush, and how is that different from a regular bush?

A compliance bush isn’t symmetrical and is designed to flex in one direction more than another, helping to control how the suspension arm moves during braking and cornering.

Why does orientation of the compliance bush matter?

Proper orientation ensures the suspension behaves as designed. If fitted incorrectly, the bush can twist or wear prematurely, affecting vehicle handling and alignment.

How do I press the bush in correctly?

You’ll need to mark both the arm and the new bush before removal to preserve orientation. Then use a press to install the bush onto both arms and housing, aligning your marks carefully.

What happens if I torque the bolts before the vehicle is on the ground?

Torquing suspension bolts while the car is raised can preload the bush in the wrong position, leading to premature failure. Always torque the final bolts with the vehicle at ride height.

Do I need to perform an ADAS calibration after fitting a bush?

It depends on the vehicle. Once the alignment is complete, check in with your diagnostic software to see whether an ADAS calibration is required.

SIGN UP TO FIND MORE

Fill up your details to hear more from our experts and get the latest updates from Delphi.

First Name*

Surname*

I have read and accept the Terms of Use and Privacy Policy

I agree to receive personalised marketing emails.

I would like to be kept up to date with promotions/marketing/features/events.

You can change your mind at any time by clicking the unsubscribe link in the footer of any newsletter email you receive from us, or by contacting us at [email protected]