Spicer Front Upper & Lower Ball Joint Kit for 2007-2018 Jeep Wrangler JK & 1999-2004 Grand Cherokee WJ (Dana 30 / 44, Single Side)

Eliminate loose steering feedback, cure dangerous front-end "death wobble," and restore precise alignment to your suspension with this genuine Spicer Front Upper & Lower Ball Joint Kit. Specially engineered to handle the harsh lateral demands of late-model solid-axle Jeep platforms—including 2007–2018 Wrangler JK/JKU and 1999–2004 Grand Cherokee WJ—this single-side service package bundles both the upper and lower heavy-duty ball joints into one convenient package.

On JK and WJ front axle architectures (Dana 30 or Dana 44), the upper and lower ball joints serve as the foundational pivot points for the steering knuckles. When you add heavy off-road modifications, such as aggressive suspension lifts and heavy, oversized 33" to 37" mud-terrain tires, the load on these joints multiplies exponentially. Over time, internal clearances open up, leading to loose steering tracking, premature tire wear, and harsh clunking or popping noises when navigating trail obstacles or potholes.

This original equipment manufacturer (OEM) kit refreshes your steering geometry with professional-grade, high-strength steel. Unlike lower-tier aftermarket options that use plastic internal seats, genuine Spicer ball joints feature advanced internal load-carrying configurations, specialized metal-on-metal or premium polymer interfaces, and robust sealing boots designed to withstand high torque, sudden trail deflections, and abrasive road debris.

Kit Contents (Services One Side):

• (1) Heavy-Duty Upper Ball Joint (Includes Castle Nut, Cotter Pin, and Hardware)

• (1) Heavy-Duty Lower Ball Joint (Includes Castle Nut, Cotter Pin, and Retaining Snap Ring)

Kit Highlights:

• Complete Single Knuckle Overhaul: Supplies 1 upper and 1 lower premium ball joint along with all critical replacement locking hardware to service one wheel station.

• Genuine Spicer OEM Quality: Manufactured by the original equipment supplier to match exact factory dimensional clearances, metal tempering, and structural specifications.

• Advanced Load Distribution: Engineered specifically to manage intense side-loading stress, keeping your steering knuckle tracking true under high-stress trail conditions.

• Heavy-Duty Greaseless Construction: Designed to lock out environmental contaminants out-of-the-box, ensuring long-lasting, low-maintenance performance over extreme terrain.

Vehicle & Axle Fitment:

• Make: Jeep

• Wrangler JK & Wrangler Unlimited JKU: 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018 (Fits Front Dana 30 and Rubicon Front Dana 44 Axles)

• Grand Cherokee WJ: 1999, 2000, 2001, 2002, 2003, 2004 (Fits Front Dana 30 Axles)

• Position: Front Left or Right Steering Knuckle (Fits Either Side — 2 Kits Required per Vehicle)