Keep the front suspension located and the steering tight with the MOOG K6663 Front Lower Suspension Ball Joint. This front lower ball joint pivots the steering knuckle against the control arm, letting the wheel steer and travel while the suspension moves. It drops in as a direct-fit replacement for the 2004-2007 Buick Rainier, 2003-2006 Chevrolet SSR, 2002-2009 Chevrolet Trailblazer, 2002-2006 Chevrolet Trailblazer EXT, 2002-2009 GMC Envoy, 2002-2006 GMC Envoy XL, 2004-2005 GMC Envoy XUV, 2003-2008 Isuzu Ascender, 2002-2004 Oldsmobile Bravada, and 2005-2009 Saab 9-7X — see the "Vehicles it fits" section for the full list.
A Belleville preload washer helps keep the bearing package tight as bearings wear, and heavy-duty gauge steel construction adds strength. Designed for OE fit and function with precision tolerances for straightforward installation. Replacing a worn ball joint helps restore vehicle handling.
What does this ball joint do?
It's the front lower pivot between the steering knuckle and control arm, letting the front wheel steer and move through suspension travel while staying located.
Which vehicles does the MOOG K6663 fit?
It's a direct-fit front lower ball joint for models like the 2002-2009 Chevrolet Trailblazer, 2002-2009 GMC Envoy, Buick Rainier, Isuzu Ascender, Saab 9-7X and more. Check the "Vehicles it fits" section.
Is this ball joint greaseable?
Yes. It uses a greaseable socket, so fresh lubricant can flush out contaminants, which helps reduce corrosion and wear over time.
What are signs a ball joint may need replacing?
Common signs include clunking or knocking from the front suspension, loose or wandering steering, uneven tire wear, and vibration. Have the cause diagnosed before replacing.
Does it come with a dust boot?
Yes. A premium dust boot is pre-installed to shield the socket components from dirt and water that cause wear.
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WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
