Mevotech GS86178 Suspension Control Arm and Ball Joint Assembly - Front Right Upper

OE-Style Front Right Upper Control Arm

Restore steering response and suspension geometry on your Lexus IS300 with the Mevotech Original Grade GS86178 suspension control arm and ball joint assembly. This front right upper assembly is built as an exact-match replacement for regular driving, with OE-style fit, form, and function.

Designed for 2001-2005 Lexus IS300 front right upper applications, GS86178 helps return the suspension to factory-like handling and ride quality. The assembly includes the ball joint, bushings, dust boot, and required mounting hardware where specified for a more straightforward repair.

Key Features

• Fits 2001-2005 Lexus IS300, front right upper
• Mevotech Original Grade GS86178 replacement assembly
• Steel control arm construction with black finish
• Pre-greased ball joint for service-ready installation
• Press-in ball joint with threaded stud
• Rubber bushings and rubber dust boot
• Castle nut and cotter pin included
• Mounting hardware included where required
• Non-adjustable OE-style design

Detailed Description

The Mevotech GS86178 is a suspension control arm and ball joint assembly engineered for the front right upper position on the Lexus IS300. It is built to match original manufacturer specifications for fit, form, and function, making it a direct replacement for worn upper suspension components on 2001-2005 Lexus IS300 models. This part cross-references Delphi TC7638 for the same application.

With a steel arm, rubber bushings, and a pre-greased ball joint, this assembly is built for routine commuters and daily-driven vehicles that need OE-style suspension restoration. The threaded ball joint stud, dust boot, castle nut, and cotter pin support a complete repair at the upper control arm location. Mevotech GS86178 is also referenced by part number GS86178 for catalog and search matching.

What It Helps Address

• Front-end looseness from a worn upper control arm
• Clunking or knocking from suspension wear
• Uneven tire wear caused by degraded suspension geometry
• Steering wander or reduced on-center feel
• Ride quality loss from worn bushings or ball joint components

Installation Notes and Tips

Install GS86178 on the front right upper position only and verify alignment after replacement. Because this assembly uses a press-in ball joint design, proper suspension service tools and torque procedures are important for a correct installation. Confirm vehicle application by year, make, model, and position before ordering.

Quality Assurance

Mevotech Original Grade parts are built as OE-style replacements for fit and function on everyday driving applications. GS86178 is designed to restore factory-like suspension performance on the Lexus IS300 while using materials and hardware details that support a proper repair.