Built for trucks that work hard, this Dorman ball joint, part number B6539RD, is a front lower suspension ball joint from Dorman's RD ("rugged duty") chassis line, which is engineered for severe-duty service. It fits many vehicles, among them the 1999-2006 Chevrolet Silverado 1500, the 1999-2006 GMC Sierra 1500 and the 2007 Chevrolet Silverado 1500 Classic. See the "Vehicles it fits" section for the full list.
The RD line is meant for vehicles that do off-road work, heavy hauling, towing and other grueling jobs. It also suits emergency vehicles that must be ready for duty, such as ambulances and off-road rescue trucks. As the front lower joint, it links the lower control arm to the steering knuckle and gives the suspension a pivot point.
- Upgraded direct replacement: designed to match the OE fit in specified severe-duty applications and engineered for improved durability.
- Coated steel housing: the housing is made of quenched and tempered steel and finished with Dorman's exclusive protective coating for a more durable, corrosion-resistant part.
- Hardware included: the necessary hardware comes with the joint and also carries a corrosion-resistant coating.
- Pre-greased where applicable: joints come pre-loaded with premium grease in specially designed grease boots with molded-in standoffs. This helps streamline installation and keep lubrication where it is needed.
Behind the RD line is a team of Dorman chassis engineering and manufacturing experts in the United States, along with more than a century of automotive experience. Clunking over bumps, loose or wandering steering and uneven tire wear are signs a ball joint may need replacing.
Interchange: TC1624 · 15750786 · K6539 · TXK6539 · JBJ844
This part cross-references / interchanges with the following part numbers:
TC1624, 15750786, K6539, TXK6539, JBJ844
Frequently Asked Questions
What does this front lower ball joint do?
It connects the lower control arm to the steering knuckle. This gives the suspension a pivot point, so the wheel can move with the suspension and turn with the steering.
I need ball joints for a 1999-2006 Chevy Silverado 1500 4x4. Does this one fit?
It is listed as a front lower ball joint for the 1999-2006 Chevrolet Silverado 1500 and the 2007 Chevrolet Silverado 1500 Classic. Use the "Vehicles it fits" section to match your exact truck.
Does the 1999-2006 GMC Sierra 1500 use this ball joint too?
Yes. It is listed as a front lower ball joint for the 1999-2006 GMC Sierra 1500, and the "Vehicles it fits" section shows every listed application.
What comes in the box, and is it pre-greased?
The ball joint comes with its necessary hardware, which has a corrosion-resistant coating. Where applicable, the joint is pre-loaded with premium grease inside its grease boot.
What are signs a ball joint may need replacing?
Clunking over bumps, loose or wandering steering and uneven tire wear can indicate a worn ball joint. Have the suspension inspected to confirm the cause before you replace parts.
