Spicer Front Upper & Lower Ball Joint Master Kit for 2007-2016 Jeep Wrangler JK & Rubicon (Dana 30 / 44, Both Sides)

Eliminate loose steering play, fix front-end "death wobble" tendencies, and restore crisp, original factory handling to your JK with this genuine Spicer Front Upper & Lower Ball Joint Master Kit. Specifically engineered as a high-durability, direct original equipment replacement for 2007–2016 Jeep Wrangler JK models, 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 30 or Dana 44 solid front axles.

On the Jeep Wrangler JK platform, 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. Over years of daily commuting, highway cruising, or demanding off-road trail riding with oversized mud tires and suspension lifts, 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 components, and can trigger the infamous front-end steering oscillation known as "death wobble."

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 original factory performance and demanding trail 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

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 30 and Dana 44 Axles. Fits standard and heavy-duty factory axle housings. Does not fit aftermarket custom 1-ton axle conversions or later JL/JT generation models.

• Jeep Wrangler JK (2-Door): 2007, 2008, 2009, 1010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, and 2018 models (Sport, Sahara, Rubicon).

• Jeep Wrangler Unlimited JK (4-Door): 2007–2018 models (Sport, Sahara, Rubicon).

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