Help keep the rear lower suspension pivoting smoothly with the Dorman suspension knuckle bushing, part number 523-273, a Knuckle Bushing / Control Arm Ball Bushing that cushions the joint between the knuckle and the control arm. It fits many vehicles, among them the 2006-2018 Toyota RAV4, 2018-2021 Lexus NX300 and 2015-2021 Lexus NX300h.
Dorman lists this part as a control arm ball bushing, and it is cataloged as a knuckle bushing, so you may see it under either name. It is cataloged for the rear lower position on both the left and right sides. Dorman precision-engineers it and puts it through testing as a dependable stand-in for the original equipment.
- Direct replacement: designed to install and perform like the original equipment on the listed vehicles.
- Reliable fit: precision-engineered to match the design and dimensions of the original components.
- Durable construction: made of steel and rubber material and built to strict manufacturing standards with sturdy, safe materials.
- Rigorously tested: checked through thorough quality control measures.
Signs a knuckle bushing may need replacing include clunking or knocking from the rear over bumps, uneven rear tire wear, and a loose or wandering feel. Other worn parts can cause similar symptoms, so diagnose the cause first. If a worn bushing is the cause, this part replaces it. Because it serves both sides, replacing the left and right bushings together is good practice.
See the "Vehicles it fits" section for engine details and the full vehicle list.
Interchange: K202077 · 423040R020 · 423050R020
This part cross-references / interchanges with the following part numbers:
K202077, 423040R020, 423050R020
Frequently Asked Questions
What does this knuckle bushing do?
It cushions the joint between the knuckle and the control arm in the rear suspension. It lets the parts pivot and helps isolate road shock and vibration.
Which vehicles does the Dorman 523-273 fit?
It fits many vehicles, including the 2006-2018 Toyota RAV4, 2018-2021 Lexus NX300 and 2015-2021 Lexus NX300h. Check the "Vehicles it fits" section for your exact vehicle.
Which side and position does it install on?
It is cataloged for the rear lower position on both the left and right sides, so the same part number serves either side.
What is this bushing made of?
Dorman states it is made of steel and rubber material. It is precision-engineered to match the design and dimensions of the original component.
What are signs the bushing may need replacing?
Clunking over bumps, uneven rear tire wear, or a loose, wandering feel can come from a worn bushing. Other parts can cause similar symptoms, so inspect the suspension before replacing.
