OE Quality
60-Day Returns

Dorman 521-911 Suspension Trailing Arm - Rear Left or Rear Right
Durable Suspension Trailing Arm for Lexus and Toyota Vehicles
The Dorman 521-911 suspension trailing arm is engineered to restore proper suspension geometry and improve handling for select Lexus and Toyota models. Constructed from steel with rubber bushings included, this trailing arm is designed to provide reliable performance and durability.
- Made from high-strength steel for structural integrity
- Includes rubber bushings to reduce vibration and noise
- Regular grade type for standard suspension applications
- Non-adjustable design for direct replacement
- Compatible with Lexus Highlander, RX300, RX330, RX350, and RX400h models
Product Details and Specifications
The Dorman 521-911 suspension trailing arm is a steel component that plays a critical role in the rear suspension system of compatible Lexus and Toyota vehicles. It comes with pre-installed rubber bushings that help absorb road shocks and minimize noise, contributing to a smoother ride. This part is a regular grade type, meaning it meets OEM specifications without additional adjustability or ball joints. The trailing arm is designed for direct replacement, ensuring proper fit and function without modification.
Compatible Vehicles and Applications
This suspension trailing arm is compatible with the following makes and models: Lexus Highlander, RX300, RX330, RX350, and RX400h. It is intended for use in suspension systems requiring a trailing arm replacement to maintain alignment and handling characteristics.
- Corrects suspension misalignment issues
- Reduces excessive tire wear caused by worn trailing arms
- Eliminates clunking or knocking noises from the rear suspension
- Restores proper handling and vehicle stability
- Addresses vibration and harshness related to deteriorated bushings
Installation Notes and Tips
Installation of the Dorman 521-911 suspension trailing arm should be performed by a qualified technician familiar with Lexus and Toyota suspension systems. It is recommended to inspect related suspension components during replacement and perform a wheel alignment afterward to ensure optimal performance. Since this part is non-adjustable and does not include ball joints, no additional adjustments are necessary beyond standard installation procedures.
Quality Assurance and Warranty
Dorman suspension components are manufactured to meet or exceed OEM standards for fit, form, and function. The 521-911 trailing arm undergoes rigorous quality control to ensure durability and reliability. This part includes rubber bushings designed for long service life under normal driving conditions. Warranty coverage details can be obtained from the product documentation or manufacturer.
| Brand | Dorman |
|---|---|
| Part Number | 521-911 |
| Adjustable | No |
| Ball Joint Included | No |
| Ball Joint Installed | No |
| Bushing Material | Rubber |
| Bushings Included | Yes |
| Grade Type | Regular |
| Material | Steel |
| Package Contents | Strut Rod |
This part fits 39 vehicles. Search below:
| Year | Make | Model | Drive Type | Position | Notes |
|---|---|---|---|---|---|
| 2009 | Lexus | RX350 | AWD | Rear Left | |
| 2009 | Lexus | RX350 | AWD | Rear Right | |
| 2008 | Lexus | RX350 | AWD | Rear Left | |
| 2008 | Lexus | RX350 | AWD | Rear Right | |
| 2008 | Lexus | RX400h | AWD | Rear | |
| 2007 | Lexus | RX350 | AWD | Rear Left | |
| 2007 | Lexus | RX350 | AWD | Rear Right | |
| 2007 | Lexus | RX400h | AWD | Rear | |
| 2007 | Toyota | Highlander | AWD | Rear Left | |
| 2007 | Toyota | Highlander | AWD | Rear Right | |
| 2006 | Lexus | RX330 | AWD | Rear Left | |
| 2006 | Lexus | RX330 | AWD | Rear Right | |
| 2006 | Lexus | RX400h | AWD | Rear | |
| 2006 | Toyota | Highlander | AWD | Rear Left | |
| 2006 | Toyota | Highlander | AWD | Rear Right | |
| 2005 | Lexus | RX330 | AWD | Rear Left | |
| 2005 | Lexus | RX330 | AWD | Rear Right | |
| 2005 | Toyota | Highlander | AWD | Rear Left | |
| 2005 | Toyota | Highlander | AWD | Rear Right | |
| 2004 | Lexus | RX330 | AWD | Rear Left | |
| 2004 | Lexus | RX330 | AWD | Rear Right | |
| 2004 | Toyota | Highlander | AWD | Rear Left | |
| 2004 | Toyota | Highlander | AWD | Rear Right | |
| 2003 | Lexus | RX300 | Rear Left | ||
| 2003 | Lexus | RX300 | Rear Right | ||
| 2003 | Toyota | Highlander | AWD | Rear Left | |
| 2003 | Toyota | Highlander | AWD | Rear Right | |
| 2002 | Lexus | RX300 | Rear Left | ||
| 2002 | Lexus | RX300 | Rear Right | ||
| 2002 | Toyota | Highlander | AWD | Rear Left | |
| 2002 | Toyota | Highlander | AWD | Rear Right | |
| 2001 | Lexus | RX300 | Rear Left | ||
| 2001 | Lexus | RX300 | Rear Right | ||
| 2001 | Toyota | Highlander | AWD | Rear Left | |
| 2001 | Toyota | Highlander | AWD | Rear Right | |
| 2000 | Lexus | RX300 | Rear Left | ||
| 2000 | Lexus | RX300 | Rear Right | ||
| 1999 | Lexus | RX300 | Rear Left | ||
| 1999 | Lexus | RX300 | Rear Right |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.