SKP SK521639 Suspension Control Arm and Ball Joint Assembly - Front Left Lower

Product Overview

The SKP SK521639 is a suspension control arm and ball joint assembly for select GM crossover and minivan applications. It is built for the front left lower position and matches fitment details that include stabilizer bar mounting tabs on certain vehicles.

Compatible With Chevrolet Uplander, Pontiac Montana, Buick Rendezvous, Buick Terraza, Saturn Relay, and Pontiac Aztek applications listed below, this part number SK521639 supports direct replacement needs where the original control arm assembly is worn or damaged.

Key Features

• Suspension control arm and ball joint assembly for the front left lower position.
• Application-specific fitment for select Chevrolet, Pontiac, Buick, and Saturn models.
• Includes coverage for vehicles with stabilizer bar mounting tabs where noted.
• Cross-references Dorman - OE Solutions 521-639 for the same application.
• Part number SK521639 for easy identification during ordering and service lookup.

Detailed Description

SK521639 is a replacement suspension control arm and ball joint assembly engineered for the front left lower suspension location on select Chevrolet Uplander, Pontiac Montana, Buick Rendezvous, Buick Terraza, Saturn Relay, and Pontiac Aztek models. Fitment varies by model year and configuration, including Design Option 1 and versions with stabilizer bar mounting tabs, so matching the vehicle details is important before installation.

This assembly is used where the original control arm has looseness, bushing wear, ball joint play, or mounting damage that affects suspension geometry and steering response. The SKP SK521639 provides a service replacement path for vehicles that need a front left lower control arm assembly rather than individual component repair. The part number SK521639 is also referenced by Dorman - OE Solutions 521-639 for the same application.

What It Helps Address

• Excessive suspension movement from worn control arm components.
• Clunking or knocking noises from the front suspension.
• Steering pull or unstable road feel caused by worn joints or bushings.
• Uneven tire wear related to suspension alignment issues.
• Damage to the original front left lower control arm assembly.

Installation Notes

Verify the vehicle year, make, model, and configuration before ordering. This part is listed for the front left lower position, and some applications require stabilizer bar mounting tabs or Design Option 1 matching. Professional installation and a post-repair alignment are recommended after suspension component replacement.

Quality Assurance

SKP replacement suspension components are cataloged for application-specific service use and cross-reference to established aftermarket part numbers. Confirm fitment against the vehicle listing before installation to ensure the correct SK521639 assembly is selected.