Keep your front end pivoting smoothly with the MOOG CHASSIS ball joint K8738, built for the front upper position and designed for OE fit and function. It is a direct-fit replacement for many vehicles, among them the 1998-2011 Ford Ranger, 2001-2010 Mazda B2300 and 1998-2007 Mazda B3000. See the "Vehicles it fits" section for the full list and engine details.
A ball joint is the pivot between the control arm and the steering knuckle. It lets the wheel steer and travel with the suspension. MOOG backs its ball joints with rigorous testing, and this one uses heavy-duty gauge steel construction for strength and durability.
- Problem Solver® gusher bearing: a metal-to-metal design adds strength and lets grease flow across the bearing surface to reduce friction.
- Heat-treated ball studs: treated to match or exceed OE requirements, helping inhibit premature failure and improve fatigue strength.
- Greaseable socket: fresh lubricant can be added to flush out contaminants, which reduces corrosion and wear.
- Belleville preload washer and pressed-in cover plate: the washer absorbs impact and helps keep the bearing package tight as the bearings wear. The patented cover plate seals out debris and minimizes looseness, and a premium boot keeps contaminants out.
Precision tolerances are intended to make installation and steering alignment straightforward. If a worn front upper ball joint is causing loose steering or clunking, a 1998-2011 Ford Ranger ball joint replacement with K8738 helps restore vehicle handling.
Frequently Asked Questions
What does a suspension ball joint do?
It is the pivot point between the control arm and the steering knuckle, so the wheel can steer and move up and down with the suspension. K8738 is a front upper ball joint.
Will this 1998-2011 Ford Ranger ball joint fit my truck?
K8738 fits the front upper position on the 1998-2011 Ford Ranger, and it also fits the 2001-2010 Mazda B2300 and 1998-2007 Mazda B3000. Check the "Vehicles it fits" section for your exact vehicle.
Can this ball joint be greased?
Yes. It has a greaseable socket, so new lubricant can be added to flush out contaminants. The gusher bearing lets grease flow across the bearing surface.
What are signs a front upper ball joint may need replacing?
Common signs include clunking over bumps, loose or wandering steering, uneven tire wear and a torn boot. Have the front suspension inspected to confirm the cause before you replace parts.
What should I know about installing it?
K8738 uses precision tolerances intended for easy installation and steering alignment. Follow the vehicle service information for the procedure and torque specs, and have the alignment checked afterward.
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