Zone Offroad ZONC8213 UCA Ball Joint Master Kit for 2001-2026 GM 2500HD/3500HD

Vehicle Fitment

• 2001-2010 Chevrolet Silverado 2500 / 2500 HD (2WD/4WD, All Engines) - for trucks equipped with Zone Offroad ZONC2300 upper control arms
• 2001-2010 Chevrolet Silverado 3500 / 3500 HD (2WD/4WD, All Engines) - for trucks equipped with Zone Offroad ZONC2300 upper control arms
• 2001-2010 GMC Sierra 2500 HD (2WD/4WD, All Engines) - for trucks equipped with Zone Offroad ZONC2300 upper control arms
• 2001-2010 GMC Sierra 3500 HD (2WD/4WD, All Engines) - for trucks equipped with Zone Offroad ZONC2300 upper control arms
• 2011-2019 Chevrolet Silverado 2500 HD (2WD/4WD, All Engines) - for trucks equipped with Zone Offroad ZONC2311 or ZONC2312 upper control arms
• 2011-2019 Chevrolet Silverado 3500 HD (2WD/4WD, All Engines) - for trucks equipped with Zone Offroad ZONC2311 or ZONC2312 upper control arms
• 2011-2019 GMC Sierra 2500 HD (2WD/4WD, All Engines) - for trucks equipped with Zone Offroad ZONC2311 or ZONC2312 upper control arms
• 2011-2019 GMC Sierra 3500 HD (2WD/4WD, All Engines) - for trucks equipped with Zone Offroad ZONC2311 or ZONC2312 upper control arms
• 2020-2026 Chevrolet Silverado 2500 HD (2WD/4WD, All Engines) - for trucks equipped with Zone Offroad ZONC2300, ZONC2311, or ZONC2312 upper control arms
• 2020-2026 Chevrolet Silverado 3500 HD (2WD/4WD, All Engines) - for trucks equipped with Zone Offroad ZONC2300, ZONC2311, or ZONC2312 upper control arms
• 2020-2026 GMC Sierra 2500 HD (2WD/4WD, All Engines) - for trucks equipped with Zone Offroad ZONC2300, ZONC2311, or ZONC2312 upper control arms
• 2020-2026 GMC Sierra 3500 HD (2WD/4WD, All Engines) - for trucks equipped with Zone Offroad ZONC2300, ZONC2311, or ZONC2312 upper control arms

Fitment Notes

• THIS IS NOT A FACTORY REPLACEMENT BALL JOINT - the ZONC8213 is designed exclusively for trucks already equipped with Zone Offroad upper control arms (ZONC2300, ZONC2311, or ZONC2312); it will not fit factory/OEM upper control arms
• Confirm which Zone Offroad UCA is installed on your truck before ordering: ZONC2300 fits 2001-2010 GM HD; ZONC2311 fits 2011-2019 GM 2500HD/3500HD; ZONC2312 also fits 2011-2019 GM 2500HD/3500HD
• Sold individually - order quantity 2 for a complete front axle pair (one per side)
• Compatible with both 2WD and 4WD Chevy/GMC 2500HD and 3500HD applications
• A ball joint press is required for installation - professional installation is strongly recommended
• ZONC8213 is the Master Kit variant - it includes the red anodized aluminum dust cap in addition to the ball joint and hardware; the ZONC8203 is the basic variant (no anodized cap, dust cap gasket only)

Features

• Purpose-built replacement ball joint dimensionally matched to the Zone Offroad C2300, C2311, and C2312 upper control arm housing bores - ensures a correct press-fit with zero shimming or modification required
• Red anodized aluminum dust cap provides a positive, highly visible seal against dirt, mud, and moisture infiltration while adding a distinctive appearance that differentiates the arm from stock components
• Gasket behind the dust cap creates a secondary barrier against contamination, critical for GM HD trucks used in heavy-duty hauling, towing, and off-road environments
• Fully greaseable design with extended grease zerk fitting for regular lubrication intervals to maximize ball joint service life under high-load and high-wear applications
• Complete rebuild kit supplies every hardware component needed for a single arm: ball joint, nut, cotter pin, snap ring, gasket, and red anodized dust cap - nothing else required
• Restores precise steering feel and proper suspension geometry to worn Zone Offroad upper control arm assemblies without requiring full arm replacement
• Engineered and manufactured in the USA by Zone Offroad, a division of Sport Truck USA / FOX Factory
• Backed by Zone Offroad's limited lifetime warranty against defects in materials and workmanship

Specifications

• Application: Replacement ball joint for Zone Offroad ZONC2300, ZONC2311, and ZONC2312 upper control arms
• Position: Front Upper
• Compatible Drivetrains: 2WD and 4WD
• Dust Cap Material: Red anodized aluminum
• Grease Fitting Included: Yes (extended grease zerk)
• Greaseable: Yes
• Pre-Greased: No
• UPC: 711745605725
• Quantity: 1 ball joint assembly (order QTY 2 for a pair)
• Estimated Installation Time: 1 hour per side
• Difficulty Level: Light to moderate - ball joint press required

Included Components

• 1x Press-In Upper Ball Joint
• 1x Retaining Nut
• 1x Snap Ring
• 1x Cotter Pin
• 1x Gasket
• 1x Red Anodized Aluminum Dust Cap
• 1x Extended Grease Zerk Fitting

Product Description

The Zone Offroad ZONC8213 is the Master Service Kit for replacing upper ball joints in Zone Offroad's C2300, C2311, and C2312 upper control arms on 2001-2026 Chevy Silverado and GMC Sierra 2500HD and 3500HD trucks. It is not a factory OEM replacement - it is an application-specific ball joint precision-matched to the bore geometry and stud dimensions of Zone Offroad's HD truck upper control arm housings, ensuring a correct press-fit, proper stud height, and optimized articulation angles without shimming, grinding, or modification. When the ball joints in Zone Offroad UCAs begin to show wear - clunking, increased play, vague steering response, or abnormal tire wear - the ZONC8213 allows the arms to be rebuilt to like-new performance without purchasing entirely new control arm assemblies.

The "Master Kit" designation distinguishes the ZONC8213 from the basic ZONC8203 by including the complete sealing package: a red anodized aluminum dust cap with a behind-the-cap gasket for double-barrier contamination protection. The red anodized cap is both a functional and visual upgrade - it seals out road grit, mud, and moisture that would otherwise accelerate ball joint wear, particularly important on HD trucks that regularly haul or tow heavy loads and may see rough road conditions. The fully greaseable design with an extended grease zerk fitting allows straightforward periodic lubrication to maintain the ball joint's long-term service life. A ball joint press is required for installation, and Zone Offroad recommends professional installation to ensure the joint is properly seated and the stud torqued to specification.

This kit spans the full range of Zone Offroad HD upper control arm applications from 2001 through 2026, covering ZONC2300 arms (2001-2010 GM HD), ZONC2311 (2011-2019 Silverado/Sierra 2500HD/3500HD), and ZONC2312 (2011-2019 Silverado/Sierra 2500HD/3500HD) - all using the same ball joint interface. Both 2WD and 4WD configurations are supported across all supported years, and all available engine variants are covered. Always verify which Zone Offroad UCA part number is installed on your truck before ordering. Sold individually - order quantity 2 for a complete front axle refresh. The ZONC8213 is backed by Zone Offroad's limited lifetime warranty against defects in materials and workmanship.