Roadmaster 3610 Active Suspension Fits: 03-12 Dodge Ram Pickups 2500 & 3500 2003-13 Dodge Ram 2500/3500 Will Not Fit Dually or Cab & Chassis Models Fitment Notes FITS 3" wide leaf springs with shackles that swinging from the TOP DOWN ONLY CAN'T FIT with an overload spring above the leaf spring pack