Kryptonite's KR6292 Bolt-In Upper Ball Joint, designed for aftermarket upper control arms, fits trucks from 2001 to 2020, including 6.6L Duramax models (LB7, LLY, LBZ, LMM, LML, L5P) for 2500/3500HD Chevy/GMC. The kit includes one Kryptonite bolt-in upper ball joint and a mounting hardware kit. This versatile ball joint is compatible with various upper control arms, not just Kryptonite's, offering a heavy-duty rubber boot for enhanced protection and an exclusive grease relief port for easy lubrication. It boasts the largest ball stud on the market and ample angle clearance. These ball joints are interchangeable with Moog K6292.