Upper Ball Joint +1.00 GM Large 4-Bolt

The Upper Ball Joint +1.00 GM Large 4-Bolt by QA1 is specifically engineered for General Motors vehicles that require precision control arm articulation. This replacement upper ball joint is essential for maintaining reliable pivot points in the front-end assemblies of GM vehicles, where worn or loose joints can lead to compromised steering response and uneven tire wear.

Designed with a 4-bolt mounting configuration typical of larger-bore GM applications, this upper ball joint provides robust clamping force and reduced deflection under cornering and braking loads. The +1.00 designation indicates a geometry offset that adjusts the ball joint's centerline position, which is critical for achieving desired caster and camber angles when paired with modified control arms or custom suspension kits.

This upper ball joint is ideal for owners of first- and second-generation Camaros, Chevelles, and full-size Chevrolet trucks, ensuring safe and responsive handling. QA1's engineering focuses on minimizing ball stud slop and extending service life through precision manufacturing and quality bearing materials, making it a reliable choice for performance enthusiasts.