Moog K6663 Suspension Ball Joint - Front Lower

MOOG K6663 Front Lower Ball Joint

MOOG K6663 is a greaseable press-in suspension ball joint for front lower applications on select GM and related SUVs and crossovers. It uses a neoprene boot, a castle nut, and a cotter pin hole to support secure service and straightforward installation on vehicles such as the Chevrolet Trailblazer and GMC Envoy.

Key Features

• Press-in mounting type for front lower suspension service
• Greaseable design for routine lubrication maintenance
• Neoprene boot material for protection against road contamination
• Castle nut included with cotter pin hole
• Standard suspension grade type
• Maximum outside diameter: 2.280 in.
• Not adjustable

Detailed Product Overview

Built for front lower suspension repair, MOOG K6663 is engineered for vehicles that need a direct replacement ball joint with serviceable construction. The press-in design is used on applications including the 2002-2009 Chevrolet Trailblazer, 2002-2009 GMC Envoy, and 2005-2009 Saab 9-7x, along with other listed GM-platform models. This part number, K6663, is also cross-referenced by TRW JBJ847 for the same application.

MOOG ball joints are backed by material selection and testing practices focused on consistent fit and dependable operation. The greaseable design and neoprene boot help support long-term suspension service, while the included castle nut and cotter pin hole align with common OE-style fastening requirements.

What This Part Helps Address

• Front suspension looseness or play at the lower control arm
• Clunking or knocking from worn ball joint joints
• Uneven tire wear related to suspension wear
• Steering instability or wandering at the front end
• Service replacement for a worn press-in lower ball joint

Installation Notes and Tips

Compatible With front lower suspension positions only. Fits 2002-2009 Chevrolet Trailblazer, front lower; 2002-2009 GMC Envoy, front lower; 2005-2009 Saab 9-7x, front lower; 2003-2008 Isuzu Ascender, front lower; 2004-2007 Buick Rainier, front lower; 2003-2006 Chevrolet SSR, front lower; 2002-2006 Chevrolet Trailblazer EXT, front lower; 2002-2006 GMC Envoy XL, front lower; 2004-2005 GMC Envoy XUV, front lower; and 2002-2004 Oldsmobile Bravada, front lower. Press-in installation requires proper suspension service tools and careful alignment during assembly. Verify vehicle application and suspension configuration before installation.

Quality Assurance

MOOG K6663 is manufactured with a greaseable service design, neoprene boot protection, and OE-style fastening features for consistent suspension repair. The part is supported by MOOG’s testing and materials standards for chassis components.