Front Upper Ball Joint for 1998-2004 Nissan Frontier & More - Mevotech Supreme MK90663

Help keep a tight, predictable front end with the Mevotech Supreme MK90663 front upper ball joint, a direct-fit replacement for the 1998-2004 Nissan Frontier and 2000-2004 Nissan Xterra. As a suspension ball joint, it is the pivot that connects the control arm to the steering knuckle, so the wheel can steer and move with the suspension.

Mevotech develops its Supreme parts in-house and gives each application its own upgrades for durability and performance. The Supreme ball joint line is built for high-usage commercial and passenger vehicles, SUVs, fleets and working trucks.

• Sintered bearings: Designed for longer-lasting performance and toughness.
• Larger sphere design: Uses an application-specific ball stud system with a larger sphere.
• Thicker, stronger flange: Helps prevent deformation during installation, and the larger flange diameter allows an accurate press fit. Knurling gives a snugger fit between connecting points, which helps the joint resist distortion and corrosion.
• Hardware and service: Comes with a part-specific castle nut and cotter pin to secure the joint, plus a 90-degree SAE grease fitting for routine servicing.

Signs that a front upper ball joint may need replacing include clunking over bumps, loose or wandering steering, uneven tire wear and noticeable play at the joint. Have the front suspension inspected to confirm the cause before you replace any parts. See the "Vehicles it fits" section for complete fitment details.