SCITOO Front Ball Joint Kit 4-Piece for Chevy Silverado/GMC Sierra 1999-2006 4WD — Pre-Greased Direct-Fit

SCITOO 4-piece front suspension kit houses two upper and two lower ball joints engineered to restore steering precision and front-end stability for compatible 1999–2006 GM trucks and SUVs.

This kit supplies the front upper and lower ball joints commonly replaced when steering becomes loose, clunks develop over bumps, or front-end alignment drifts. Each ball joint is pre-greased at the factory for quick installation and is offered as a direct-fit replacement for many Chevrolet, GMC and Cadillac light-duty trucks and SUVs from the listed model years. The set simplifies repair by delivering both upper and lower ball joints together so you can refresh both contact points at once.

Which vehicles does this SCITOO suspension kit fit?

This kit is designed for a range of GM vehicles—check exact year/engine/trim fitment before ordering. It covers multiple models across Chevrolet, GMC and Cadillac within the 1999–2008 model-year spans noted for specific vehicles.

• Chevrolet Silverado 1500 (1999–2006) 4WD/AWD
• Chevrolet Tahoe, Suburban, Avalanche and Express models listed in the product details
• GMC Sierra 1500, Yukon series, Savana vans, and Cadillac Escalade variants listed
• Confirm Year/Make/Model/Trim selection on the product page to ensure compatibility

What components are included and how are they prepared?

The package contains four ball joints: two upper (K6540) and two lower (K6541) front ball joints. SCITOO ships these parts pre-greased, reducing prep time during installation and helping protect components during initial break-in.

• Includes: (2) K6540 front upper ball joints and (2) K6541 front lower ball joints
• Factory pre-greased—no immediate additional greasing required before installation
• Sold as a set to replace both sides for consistent wear and alignment

How will replacing these ball joints affect driving and maintenance?

Fresh ball joints restore tighter steering response, reduce front-end noise, and improve tire wear patterns by keeping suspension geometry within spec. Replacing both upper and lower joints together helps maintain balance and reduces the chance of early rework.

• Reduces looseness and clunking over bumps
• Improves front tire wear and alignment stability
• Pre-greased joints simplify installation and initial service

Are there any installation notes or buyer tips?

Installation typically requires basic suspension tools and alignment afterward. Because fitment depends on year, engine and trim, always verify vehicle compatibility before purchase; technicians commonly replace both sides at once for consistent handling.

• Verify Year/Make/Model/Trim selection on the product page
• Plan for a wheel alignment after installation to restore proper tracking
• Use proper torque specs and safety procedures when working on suspension components

Who is this for: This SCITOO 4-piece front suspension ball joint kit is aimed at DIY mechanics and professional technicians maintaining or restoring handling on late-1990s to mid-2000s GM 1500-series trucks and related SUVs. Choose this kit when your vehicle shows steering play, uneven tire wear, or audible front-end noises, and when you want a pre-greased, direct-fit replacement set that covers both upper and lower ball joints for consistent front-end performance.