Help keep the front suspension steady and composed with the Dorman control arm bushing, part number 540-866, a direct replacement for the 2006-2011 Buick Lucerne and 2006-2011 Cadillac DTS. It is cataloged for the front lower rearward position. There it serves as the pivot point between the lower control arm and the chassis, letting the arm move with the suspension while helping to absorb vibration.
This Dorman suspension control arm bushing is precision-engineered and rigorously tested as a dependable replacement for the original equipment bushing on these vehicles.
- Direct replacement: Designed to fit and perform like the original equipment bushing on the listed applications.
- Reliable fit: Precision-engineered to match the design and dimensions of the original components.
- Durable construction: Manufactured to strict standards using sturdy, safe materials.
- Rigorously tested: Put through thorough quality control checks intended to support longevity.
Over time, a control arm bushing can wear, crack or tear. Signs that it may need replacing include clunking or knocking over bumps, loose or wandering steering, vibration and uneven tire wear. Other suspension parts can cause the same symptoms, so inspect before replacing. If a worn bushing turns out to be the cause, 540-866 replaces it. See the "Vehicles it fits" section for complete fitment details.
Interchange: FB993075 · 15939601
Frequently Asked Questions
Can I use this as the control arm bushing for a 2006-2011 Buick Lucerne?
Yes. Dorman 540-866 is listed for the 2006-2011 Buick Lucerne and the 2006-2011 Cadillac DTS. Check the "Vehicles it fits" section to confirm fitment for your vehicle.
What does a control arm bushing do?
It sits at the control arm's mounting point. It lets the arm pivot as the suspension moves and helps absorb vibration and limit unwanted movement.
Which position is this bushing for?
The catalog lists this bushing for the front lower rearward position on the listed applications.
What are signs a control arm bushing may need replacing?
Signs include clunking or knocking over bumps, loose or wandering steering, vibration and uneven tire wear. Other suspension parts can cause similar symptoms, so inspect before replacing.
Is a wheel alignment needed after installation?
Replacing a control arm bushing can affect suspension geometry, so an alignment check after installation is recommended. Follow the vehicle service information for the procedure and torque specs.
