Dorman 527-334 Lateral Arm - Rear Upper

Dorman 527-334 Rear Upper Lateral Arm

Dorman 527-334 is a rear upper lateral arm engineered as a standard replacement for specific Lexus and Toyota applications. It is built from steel with press-in bushings and is designed to restore suspension geometry on vehicles such as the Lexus RX350, RX450h, and Toyota Highlander.

Key Features

• Steel construction for suspension strength and durability
• Press-in bushing attachment for OE-style serviceability
• Black bushings and black finish
• Bushings included
• No ball joint included and no ball joint installed
• No mounting hardware included
• Standard replacement grade
• Part number: 527-334

Detailed Description

This lateral arm is precision-engineered and tested to replace the original equipment part on select rear upper suspension locations. It measures 289.5 mm in length and 65 mm in height, with a 14.2 mm mounting hole diameter. The arm uses steel and rubber bushing materials for a direct-fit suspension repair on 2010-2022 Lexus RX350, 2010-2022 Lexus RX450h, 2018-2022 Lexus RX350L, 2018-2022 Lexus RX450hL, and 2014-2019 Toyota Highlander applications. Part number 527-334 is a practical choice when servicing rear upper suspension wear on these platforms.

This part cross-references MOOG Chassis Products RK643160 for the same application.

Common Repair Symptoms

• Rear suspension clunking or knocking over bumps
• Excessive rear wheel movement or looseness
• Uneven tire wear related to suspension geometry
• Worn or deteriorated control arm bushings
• Rear-end instability or imprecise handling

Installation Notes and Tips

Compatible With rear upper suspension positions only. Verify vehicle year, make, model, and rear upper application before installation. Because this arm uses press-in bushings and does not include mounting hardware, inspect related fasteners and surrounding suspension components during service. A professional alignment is recommended after replacement to confirm rear suspension geometry.

Quality Assurance

Dorman designs this replacement arm for specific vehicle applications and subjects it to testing to support reliable OE-style fit and function. The steel construction and standard replacement design are intended to meet the needs of routine suspension repair on Lexus RX350, Lexus RX450h, and Toyota Highlander models.