Spicer Front Steering Knuckle Ball Joint Kit for 1978-1987 Chevy/GMC K10, K20 & K5 Blazer (GM 8.5" 10-Bolt, Both Sides)

Eliminate erratic steering wander, correct uneven tire wear, and restore crisp, original factory handling to your classic square-body rig with this genuine Spicer Front Steering Knuckle Ball Joint Kit. Specifically engineered for classic GM 4WD platforms from 1978–1987 (and up to 1991 for K5 Blazer/Suburban configurations) equipped with an open-knuckle corporate GM 8.5-inch 10-Bolt front axle, this premium master chassis package includes all the heavy-duty upper and lower ball joints required to completely rebuild both the driver and passenger sides simultaneously.

On vintage full-size Chevrolet and GMC trucks, worn ball joints are a leading cause of wandering steering feedback, tire cupping, and harsh front-end clunking over rough terrain or trail obstacles. Decades of dependable service combined with large off-road tires accelerate wear on the internal boots and seats, allowing factory grease to escape and abrasive road grit to enter. This genuine Spicer OEM service bundle updates your front-end steering geometry with professional-grade forgings designed to handle high torsional loads. Each component features exact dimensional indexing to guarantee a reliable, high-pressure press-fit into your factory axle yokes and steering knuckles.

Kit Highlights:

• Complete Axle Overhaul Bundle: Contains 2 upper ball joints, 2 lower ball joints, premium cotter pins, castle nuts, snap rings, and specialized hardware required to service both front steering knuckles at the same time.

• Genuine Spicer OEM Quality: Manufactured by the industry’s trusted original equipment supplier to meet strict structural and material tolerances, providing far greater longevity than generic aftermarket alternatives.

• Heavy-Duty Forged Steel Construction: Heat-treated internal ball studs and premium housings prevent deflection and resist stretching under intense off-road trail conditions or commercial hauling.

• Greaseable Service Design: Equipped with integrated lubrication channels to easily purge moisture, mud, and trail grit during routine maintenance intervals.

Vehicle & Axle Fitment:

• Make: Chevrolet / GMC (Square-Body 4WD Models)

• Models: K10/K1500 Pickup, K20/K2500 Pickup, K5 Blazer, Jimmy, K10/K20 Suburban

• Years: Pickups: 1978–1987 | Blazer / Jimmy / Suburban: 1978–1991

• Axle Profile: Front Open-Knuckle GM Corporate 8.5" 10-Bolt Axle Assemblies (Fits Left and Right Sides)