Chevrolet Silverado 2500HD Ball Joint - Upper - Cognito Alpha PRO (2011-2025). A bootless, serviceable upper ball joint built for Cognito press-in style upper control arms.

Alpha PRO replaces a traditional dust/grease boot with a durable scraper seal that resists damage and keeps contaminants out. It arrives pre-greased with Lithium Complex Grade 2 and includes a top grease fitting for quick periodic service; the compact internal cavity requires very little grease. Alloy steel internals and races, with no plastic liner, provide consistent action. A carburized, surface-coated taper pin with an oversized sphere increases contact area for strength and wear, and the high-angle design supports added suspension travel. Zinc-plated housing and a replacement billet cap included. U.S. Pat. 10,731,700.

Features

• Bootless scraper-type seal to block contaminants
• Greaseable via top fitting; small internal grease cavity
• Alloy steel internals and races; no plastic liner
• Carburized, coated taper pin with oversized sphere
• High-angle articulation for additional suspension travel
• Zinc-plated corrosion-resistant housing
• Replacement billet cap included

Questions about fitment or install? Call us. We offer installation and customization at our Austin, Texas and Los Angeles, California area locations: Texas 512-982-9393, California 562-981-6800.

Buying multiple items? Contact us for shipping discounts. We install on premises at both locations.

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov