Dorman 540-840 Suspension Control Arm Bushing - Front Right Lower Rearward

Dorman 540-840 Suspension Control Arm Bushing

Dorman 540-840 is a suspension control arm bushing built as a standard replacement for specific Lexus applications. It is precision-engineered and tested to match the original equipment function on the front right lower rearward control arm position.

• Standard replacement suspension control arm bushing
• Aluminum and rubber construction for OE-style fit and function
• Bracket included
• Bolt-in mounting type
• Designed for the front right lower rearward position
• Silver finish with black/gray color code details

Fitment Coverage

• Fits 2016-2025 Lexus IS300, front right lower rearward
• Fits 2006-2025 Lexus IS350, front right lower rearward
• Fits 2016-2025 Lexus RC300, front right lower rearward
• Fits 2015-2025 Lexus RC350, front right lower rearward
• Fits 2013-2020 Lexus GS350, front right lower rearward
• Fits 2007-2011 Lexus GS350, front right lower rearward
• Fits 2016-2017 Lexus IS200t, front right lower rearward
• Fits 2006-2015 Lexus IS250, front right lower rearward
• Fits 2007-2011 Lexus GS450h, front right lower rearward
• Fits 2008-2011 Lexus GS460, front right lower rearward
• Fits 2006-2007 Lexus GS430, front right lower rearward
• Fits 2006 Lexus GS300, front right lower rearward

Key Features

• Inside diameter: 21.1
• Outside diameter: 92.5
• Height: 92.5
• Width: 72.43
• Length: 187.97
• Wall thickness: 28.22
• Mounting hole diameters: 12.1 and 25.1
• Distance between mounting holes: 153
• Dust boot not included
• Mounting hardware not included

Detailed Description

This Dorman suspension control arm bushing is made for Lexus IS300, IS350, RC300, RC350, GS350, IS200t, IS250, GS450h, GS460, GS430, and GS300 models in the front right lower rearward location. The aluminum and rubber design supports the control arm connection with a standard replacement fit, while the included bracket helps match the original assembly layout. Dorman 540-840 is a practical OE-style service part for restoring suspension joint integrity on the specified Lexus chassis.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Common Repair Uses

• Front suspension clunking from worn control arm bushings
• Excessive play in the lower rearward control arm mount
• Uneven tire wear related to suspension bushing wear
• Steering instability caused by deteriorated bushing material
• Noise and vibration from a loose or damaged control arm connection

Installation Notes and Tips

Verify the front right lower rearward position before installation and compare the original bushing dimensions, bracket layout, and mounting hole spacing to the removed part. Because mounting hardware is not included, reuse or source the required fasteners separately as needed. Proper suspension inspection and alignment after installation are recommended whenever control arm bushings are replaced.

Quality Assurance

Dorman designs this suspension control arm bushing as a precision-engineered replacement and subjects it to testing for reliable service on the listed Lexus applications. Part number 540-840 is built to provide a direct replacement solution for the original equipment style assembly.