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Dorman 524-678 Suspension Control Arm - Rear Left Lower Rearward, Rear Lower Rearward or Rear Right Lower Rearward
| Brand | Dorman 524-678 |
|---|---|
| Position | Rear Left Lower Rearward, Rear Right Lower Rearward, and Rear Lower Rearward |
| Material | Steel |
| Bushing Color | Black |
| Length | 262.5 |
| Construction | Stamped |
| Color | Black |
| Finish | Coated |
| Grease Fitting Included | No |
| Bushings Included | Yes |
| Ball Joint Mounting Type | Welded |
| Ball Joint Stud Type | Threaded |
| Ball Joint Included | No |
| Mounting Hardware Included | No |
| Grade Type | Regular |
| Adjustable | No |
| Bushing Material | Rubber |
| Bushing Inside Diameter | 14.3 |
| Bushing Length | 92 |
| Ball Joint Installed | No |
| Bushing Outside Diameter | 39.6 mm |
| Bushing Quantity | 1 |
| End 2 Type | Press in |
| Linkage End Type | Bushing |
| Mounting Brackets Included | No |
| Overall Length | 262.5 mm |
| Package Contents | Suspension control arm |
| Fits | Lexus and Toyota · 76 vehicles |
OE-style replacement. Precision-engineered for reliable suspension service on specific applications.
Stamped steel construction. Coated finish and rubber bushings support durable rear suspension operation.
Direct-fit design. No adjustable setup for straightforward replacement of the original arm.
Cross-references Mevotech Supreme CMS861153, MOOG Chassis Products RK643057 and 5CB86330 for the same application. See all 5.
Suspension Control Arm Overview
Dorman 524-678 is a suspension control arm built as a direct replacement for specific Lexus and Toyota applications. It is engineered and tested for reliable service where the original arm has worn, bent, or lost bushing integrity.
Key Features
- Steel stamped construction with a coated finish for durable suspension service.
- Rubber bushings are included to restore arm-to-frame connection performance.
- Welded ball joint mounting type with a threaded stud interface.
- No adjustable design for OE-style replacement fitment.
- Compatible with Lexus RX350, RX350L, RX450h, RX450hL and Toyota Highlander rear suspension applications.
Detailed Description
This Dorman suspension control arm, part number 524-678, is made for rear lower rearward suspension positions on select Lexus RX350, Lexus RX450h, and Toyota Highlander models, along with related RX350L and RX450hL applications. The stamped steel body, coated finish, and rubber bushings are specified to match the needs of a replacement control arm in the rear suspension. Part number 524-678 is a practical option when the original arm shows wear at the bushings or mounting points.
This part cross-references Mevotech Supreme CMS861153 and MOOG Chassis Products RK643057 for the same application.
What It Helps Address
- Excessive rear suspension looseness from worn control arm bushings.
- Clunking or knocking caused by deteriorated suspension joints or mounts.
- Uneven rear tire wear related to suspension geometry issues.
- Handling instability from a bent or fatigued control arm.
- Noise and vibration from worn rear lower suspension components.
Installation Notes and Tips
Verify the exact rear position and side before ordering, since this control arm is listed for rear lower rearward applications with left- and right-side coverage on several vehicles. Confirm that the vehicle matches the listed Lexus RX350, RX350L, RX450h, RX450hL, or Toyota Highlander fitment before installation. Mounting hardware is not included.
Quality Assurance
Dorman states this control arm is precision-engineered and rigorously tested to serve as a reliable replacement for the original equipment on specific vehicles.
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2022 | Lexus | RX350 | Rear Lower Rearward | — |
| 2022 | Lexus | RX350L | Rear Lower Rearward | — |
| 2022 | Lexus | RX450h | Rear Lower Rearward | — |
| 2022 | Lexus | RX450hL | Rear Lower Rearward | — |
| 2021 | Lexus | RX350 | Rear Lower Rearward | — |
| 2021 | Lexus | RX350L | Rear Lower Rearward | — |
| 2021 | Lexus | RX450h | Rear Lower Rearward | — |
| 2021 | Lexus | RX450hL | Rear Lower Rearward | — |
| 2020 | Lexus | RX350 | Rear Left Lower Rearward | — |
| 2020 | Lexus | RX350 | Rear Right Lower Rearward | — |
| 2020 | Lexus | RX350L | Rear Left Lower Rearward | — |
| 2020 | Lexus | RX350L | Rear Right Lower Rearward | — |
| 2020 | Lexus | RX450h | Rear Left Lower Rearward | — |
| 2020 | Lexus | RX450h | Rear Right Lower Rearward | — |
| 2020 | Lexus | RX450hL | Rear Left Lower Rearward | — |
| 2020 | Lexus | RX450hL | Rear Right Lower Rearward | — |
| 2019 | Lexus | RX350 | Rear Left Lower Rearward | — |
| 2019 | Lexus | RX350 | Rear Right Lower Rearward | — |
| 2019 | Lexus | RX350L | Rear Left Lower Rearward | — |
| 2019 | Lexus | RX350L | Rear Right Lower Rearward | — |
| 2019 | Lexus | RX450h | Rear Left Lower Rearward | — |
| 2019 | Lexus | RX450h | Rear Right Lower Rearward | — |
| 2019 | Lexus | RX450hL | Rear Left Lower Rearward | — |
| 2019 | Lexus | RX450hL | Rear Right Lower Rearward | — |
| 2019 | Toyota | Highlander | Rear Left Lower Rearward | — |
| 2019 | Toyota | Highlander | Rear Right Lower Rearward | — |
| 2018 | Lexus | RX350 | Rear Left Lower Rearward | — |
| 2018 | Lexus | RX350 | Rear Right Lower Rearward | — |
| 2018 | Lexus | RX350L | Rear Left Lower Rearward | — |
| 2018 | Lexus | RX350L | Rear Right Lower Rearward | — |
| 2018 | Lexus | RX450h | Rear Left Lower Rearward | — |
| 2018 | Lexus | RX450h | Rear Right Lower Rearward | — |
| 2018 | Lexus | RX450hL | Rear Left Lower Rearward | — |
| 2018 | Lexus | RX450hL | Rear Right Lower Rearward | — |
| 2018 | Toyota | Highlander | Rear Left Lower Rearward | — |
| 2018 | Toyota | Highlander | Rear Right Lower Rearward | — |
| 2017 | Lexus | RX350 | Rear Left Lower Rearward | — |
| 2017 | Lexus | RX350 | Rear Right Lower Rearward | — |
| 2017 | Lexus | RX450h | Rear Left Lower Rearward | — |
| 2017 | Lexus | RX450h | Rear Right Lower Rearward | — |
| 2017 | Toyota | Highlander | Rear Left Lower Rearward | — |
| 2017 | Toyota | Highlander | Rear Right Lower Rearward | — |
| 2016 | Lexus | RX350 | Rear Left Lower Rearward | — |
| 2016 | Lexus | RX350 | Rear Right Lower Rearward | — |
| 2016 | Lexus | RX450h | Rear Left Lower Rearward | — |
| 2016 | Lexus | RX450h | Rear Right Lower Rearward | — |
| 2016 | Toyota | Highlander | Rear Left Lower Rearward | — |
| 2016 | Toyota | Highlander | Rear Right Lower Rearward | — |
| 2015 | Lexus | RX350 | Rear Left Lower Rearward | — |
| 2015 | Lexus | RX350 | Rear Right Lower Rearward | — |
| 2015 | Lexus | RX450h | Rear Left Lower Rearward | — |
| 2015 | Lexus | RX450h | Rear Right Lower Rearward | — |
| 2015 | Toyota | Highlander | Rear Left Lower Rearward | — |
| 2015 | Toyota | Highlander | Rear Right Lower Rearward | — |
| 2014 | Lexus | RX350 | Rear Left Lower Rearward | — |
| 2014 | Lexus | RX350 | Rear Right Lower Rearward | — |
| 2014 | Lexus | RX450h | Rear Left Lower Rearward | — |
| 2014 | Lexus | RX450h | Rear Right Lower Rearward | — |
| 2014 | Toyota | Highlander | Rear Left Lower Rearward | — |
| 2014 | Toyota | Highlander | Rear Right Lower Rearward | — |
| 2013 | Lexus | RX350 | Rear Left Lower Rearward | — |
| 2013 | Lexus | RX350 | Rear Right Lower Rearward | — |
| 2013 | Lexus | RX450h | Rear Left Lower Rearward | — |
| 2013 | Lexus | RX450h | Rear Right Lower Rearward | — |
| 2012 | Lexus | RX350 | Rear Left Lower Rearward | — |
| 2012 | Lexus | RX350 | Rear Right Lower Rearward | — |
| 2012 | Lexus | RX450h | Rear Left Lower Rearward | — |
| 2012 | Lexus | RX450h | Rear Right Lower Rearward | — |
| 2011 | Lexus | RX350 | Rear Left Lower Rearward | — |
| 2011 | Lexus | RX350 | Rear Right Lower Rearward | — |
| 2011 | Lexus | RX450h | Rear Left Lower Rearward | — |
| 2011 | Lexus | RX450h | Rear Right Lower Rearward | — |
| 2010 | Lexus | RX350 | Rear Left Lower Rearward | — |
| 2010 | Lexus | RX350 | Rear Right Lower Rearward | — |
| 2010 | Lexus | RX450h | Rear Left Lower Rearward | — |
| 2010 | Lexus | RX450h | Rear Right Lower Rearward | — |
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