Spicer Front Upper & Lower Ball Joint Master Kit for 1973-1980 Chevy & GMC K10, K20, K5 Blazer & Jimmy (Dana 44, Both Sides)

Eliminate loose steering play, fix front-end "death wobble" tendencies, and restore original factory handling to your vintage square-body truck or SUV with this genuine Spicer Front Upper & Lower Ball Joint Master Kit. Specifically engineered as a high-durability, direct original equipment replacement for 1973–1980 Chevrolet and GMC 4x4 vehicles, this package contains all the primary heavy-duty structural components required to fully rebuild both the driver and passenger side steering knuckles on open-knuckle Dana 44 solid front axles.

On classic GM full-size four-wheel-drive platforms, the front steering knuckles pivot on a dual ball joint design to translate your steering inputs while supporting the full structural weight of the vehicle’s front end and heavy cast-iron small block or big block V8 engines. Over decades of farm use, highway cruising, or off-road trail riding with oversized mud tires, the internal seats of these factory ball joints naturally wear out, dry up, or experience water entry. Worn ball joints introduce dangerous play into the front axle knuckles, causing steering wheel wander, loose responsiveness, uneven tire tread wear, or clunking noises over bumps. Left unaddressed, severe ball joint wear alters front wheel alignment, strains your steering gear box, and risks structural component separation on the road or trail.

This original equipment manufacturer (OEM) replacement master bundle features heavy-duty ball joints forged from premium-grade steel, heat-treated for maximum fatigue resistance, and precision-machined to exact factory tolerances. Sourcing a genuine Spicer kit ensures a perfect press-fit into your factory inner C-axle ears, eliminating the risk of loose housings or premature component failure. To match vintage factory performance and demanding off-road duty, these premium replacement units are engineered with a grease-service architecture, allowing you to flush away moisture, road salt, and trail grit during routine maintenance.

Kit Contents (Complete Set Overhauls Both Front Knuckles):

• (2) Genuine Spicer Premium Heavy-Duty Upper Ball Joints

• (2) Genuine Spicer Premium Heavy-Duty Lower Ball Joints

• Complete Set of Factory-Spec Castle Nuts, Cotter Pins, and Retaining Hardware

• Specialized Knuckle Threaded Adjustment Sleeves

Kit Highlights:

• Complete Dual-Side Restoration: Supplies exactly enough factory-correct upper and lower ball joints to fully overhaul both the left and right front steering knuckles simultaneously.

• Genuine Spicer Forged Strength: Precision-manufactured by the industry's benchmark drivetrain supplier to guarantee uncompromised structural integrity, exact metallurgical limits, and a long operational lifespan.

• Greaseable Service Design: Features integrated lubrication paths and grease fittings, letting you easily flush out trail contaminants to maximize internal ball-and-socket service life.

• Restores Steering Tracking: Eliminates internal knuckle play to instantly solve lane wander, reduce front-end vibration, and prevent premature wear on expensive light truck or off-road tires.

Vehicle & Axle Fitment:

• Axle Profile: Open-Knuckle Solid Front Dana 44 Axles. Does not fit heavy-duty Dana 60 1-ton axles, closed-knuckle setups, or later independent front suspension (IFS) configurations.

• Chevrolet & GMC K10 Pickup: 1973, 1974, 1975, 1976, 1977, 1978, 1979, and 1980 1/2-ton 4x4 light-duty truck models.

• Chevrolet K5 Blazer / GMC Jimmy: 1973–1980 full-size 4x4 models.

• Chevrolet & GMC K20 Pickup: 1973–1980 3/4-ton 4x4 trucks running the open-knuckle Dana 44 front axle.

• Chevrolet & GMC Suburban: 1973–1980 K10/K20 4x4 family utility models.

• Position: Front Axle Steering Knuckle — Left (Driver) and Right (Passenger) Sides (1 Kit Overhauls Entire Front Axle)