Autsurles Front Upper Control Arm Replacement Kit — 4pc Set, Direct-Fit with Sealed Ball Joints

Autsurles 4-piece front upper control arm and ball joint replacement kit restores proper steering geometry and suspension stability for compatible GM SUVs.

This complete front upper control arm assembly set is designed as a direct-fit replacement for a range of mid-2000s GM and GM-derived SUVs, including Chevrolet Trailblazer, GMC Envoy, Buick Rainier, Oldsmobile Bravada, Saab 9-7x and others listed in the fitment chart. Each assembly arrives factory-tested with precision TIG welds, corrosion-resistant finishes and sealed ball joints to help return factory-like handling and dependable road manners without the guesswork of part compatibility.

Which vehicles will this 4-piece control arm kit fit?

The kit fits multiple model years and variants across Chevrolet, GMC, Buick, Oldsmobile and Saab platforms — check your VIN or the fitment chart before purchase to confirm exact compatibility.

• Chevrolet Trailblazer 2002–2009 (including EXT models where specified)
• GMC Envoy 2002–2009 (including XL and XUV variants)
• Isuzu Ascender 2003–2008, Buick Rainier 2004–2007
• Chevrolet SSR 2003–2006, Oldsmobile Bravada 2002–2004, Saab 9-7x 2005–2009

How does replacing these upper control arms and ball joints improve driving?

Worn control arms and ball joints create play in the front suspension that leads to loose steering, uneven tire wear, and reduced road control. Swapping in a matched four-piece set restores precise steering feedback and stabilizes front-end geometry for more predictable handling.

• Eliminates excessive play and steering wander
• Restores correct wheel alignment geometry
• Helps reduce premature, uneven tire wear
• Improves braking stability under load

What materials and manufacturing features ensure long-term reliability?

The assemblies are built using robust materials and manufacturing methods focused on strength and durability. Corrosion-resistant coatings and precision TIG welds help the assemblies withstand road conditions and maintain structural integrity over time.

• High-strength steel components with anti-corrosion treatment
• Precision TIG welding for improved joint strength
• Sealed, pre-greased ball joints to limit contamination
• Each unit inspected and tested for fit and function

What comes in the kit and what should I expect during installation?

The 4-piece set includes driver and passenger front upper control arm assemblies with integrated ball joints. The assemblies are engineered for a direct replacement installation, but alignment after installation is recommended.

• 1 x Front Driver Upper Control Arm Assembly - K640293
• 1 x Front Passenger Upper Control Arm Assembly - K640294
• Direct-fit design to match factory mounting points
• Professional or experienced DIY installation advised; post-install wheel alignment recommended

Who is this for: This Autsurles 4-piece front upper control arm and ball joint kit is aimed at owners and mechanics maintaining mid-2000s GM-based SUVs who need a dependable, vehicle-specific replacement to restore handling precision. It's suited for routine suspension repairs, pre-safety inspection replacements, or when diagnosis shows worn upper control arms or loose front-end components. Always verify vehicle fitment and consider professional installation and alignment for optimal results.