MOOG Problem Solver products incorporate proven design and engineering features for like new steering, ease of installation and longer life. MOOG is the preferred steering and suspension parts brand of professional technicians and NASCAR(R) Crew Chiefs. Problem Solver powdered metal gusher bearing design enables grease to flow through the bearing to the stud for reduced friction and enhanced strength and stability. Problem Solver patented cover plate design allows for tighter tolerances vs traditional cover plate designs, providing a more durable and extended life part. Full ball metal stud provides 360 degrees of smooth, consistent, rotational movement resulting in more responsive steering. Patent pending Sunoloy coated metal bearings provide smooth stud swing technicians and drivers prefer.
Bought these to replace OEM ball joints in my 03 Chevy Duramax. Install was pretty simple just follow the step by step instructions in this YouTube video https://youtu.be/PpFUD4-Swx8 and you shouldn't have any problems.