Heavy-duty control arms and ball joints are the key to achieving excellent ride quality that's free of wandering, and rough steering feel. Our selection of control arms is ideal for those seeking improved ride quality and control, especially after lifting their vehicle. Control arms maintain your truck's steering geometry, which results in better handling and tighter steering. Ball joints are often a weak point for the GM 2500HD/3500HD, wearing out quickly, particularly for those using larger wheels and tires. Our heavy-duty ball joints are the perfect upgrade for your worn factory components. Check out our selection ofSteering Components! GM Duramax Fitments: 2001, 2002, 2003, 2004 GM 6.6L Duramax.Submodel Fitments: WT, Custom, LT, LTZ, High Country, 1LT, 2LT, Pro, SLE, SLT, AT4, Denali.Some exceptions apply, please see individual product pages for specific fitments.