Delphi TC3993 Suspension Control Arm and Ball Joint Assembly - Front Left Lower

Overview

Delphi TC3993 is a suspension control arm and ball joint assembly built for direct replacement applications with confirmed fitment for select Infiniti and Nissan models. It combines an aluminum control arm, pre-greased components, and an included dust boot to support consistent steering and suspension operation.

Key Features

• Aluminum control arm with casting/forged construction for strength and weight control.
• Ball joint, bushings, and dust boot included for a complete assembly.
• Pre-greased design with a non-greaseable ball joint.
• Machined ball joint mounting type with grooved stud design.
• Uncoated finish and premium-grade construction.
• Mounting hardware included.

Detailed Description

Delphi TC3993 is engineered as a suspension control arm and ball joint assembly for the front left lower position. It is a fitment-based replacement for 2014-2019 Infiniti QX60, 2013-2019 Nissan Pathfinder, and 2013 Infiniti JX35. The aluminum arm, rubber bushings, chloroprene rubber boot material, and pre-greased joint are specified to match the demands of everyday suspension movement while maintaining OE-style dimensional compatibility. Delphi TC3993 also reflects the brand’s OE-focused testing approach, including temperature and corrosion exposure validation used in its aftermarket steering portfolio. This part cross-references Mevotech Supreme CMS301218 and MOOG Chassis Products RK623064 for the same application.

Common Issues This Part May Address

• Excessive play or looseness in the suspension arm assembly.
• Clunking or knocking from a worn ball joint or bushings.
• Uneven tire wear related to suspension geometry wear.
• Steering instability caused by worn lower control arm components.
• Boot damage that can expose the joint to contamination.

Installation Notes

Fits 2014-2019 Infiniti QX60, front left lower. Fits 2013-2019 Nissan Pathfinder, front left lower. Fits 2013 Infiniti JX35, front left lower. Verify the mounting hole diameter, bushing dimensions, and position before installation. Because this assembly is pre-greased and includes the ball joint and bushings, it is ready for replacement once the original component is removed and the mounting points are inspected.

Quality Assurance

Delphi applies OE-focused dimensional and material analysis to help maintain compatibility between original equipment and aftermarket replacement parts. The brand also subjects parts to extreme temperature and salt-spray testing to evaluate durability in demanding service conditions.