Dorman 520-749 Suspension Control Arm - Rear Lower Forward

Dorman 520-749 Rear Lower Forward Control Arm

Dorman 520-749 is a steel suspension control arm built for the rear lower forward position on select Nissan and INFINITI vehicles. It is precision-engineered and tested as a direct replacement for the original equipment arm, with an adjustable design for applications that require alignment correction.

Key Features

• Steel construction with a painted black finish
• Adjustable rear lower forward control arm design
• Rubber bushing included with black bushing color
• Bolt-in ball joint mounting type with threaded stud type
• Mounting hardware included
• Replacement for select Nissan 370Z and INFINITI rear suspension applications

Detailed Description

This suspension control arm is designed for the rear lower forward position and is used on a range of Nissan 370Z and INFINITI models, including the 2009-2020 Nissan 370Z, 2021 Nissan 370Z, and select INFINITI QX50, QX70, Q40, Q60, EX37, FX37, FX50, G37, EX35, FX35, G25, M35, M45, and G35 applications. Dorman 520-749 uses a forged/cast steel construction with a painted finish for a durable OE-style replacement. The arm includes a rubber bushing and is adjustable, which is important for rear suspension alignment on vehicles that use this configuration. This part cross-references MOOG Chassis Products RK100090 for the same application.

Common Problems This Part Can Help Address

• Rear suspension looseness or instability
• Excessive tire wear caused by rear alignment issues
• Clunking or knocking from a worn control arm bushing
• Vehicle pulling or uneven tracking after suspension wear
• Failed or bent rear lower forward control arm on Nissan 370Z or INFINITI models

Installation Notes and Tips

Verify the rear lower forward position and confirm vehicle-specific fitment before installation. Because this arm is adjustable, a professional wheel alignment should be performed after installation to set rear suspension geometry correctly. Inspect adjacent bushings, mounting points, and related suspension components for wear before completing the repair. Dorman part number 520-749 is intended for direct replacement use on the listed applications.

Quality Assurance

Dorman states that this control arm is precision-engineered and rigorously tested to provide a reliable replacement for the original equipment part on specific vehicles. The design and materials are selected to match the demands of rear suspension service on Nissan 370Z and INFINITI applications.