its both, you can get the whole arm like i did for about 110 apiece.

As I recommend to you and Alex, if you are going through the trouble to replace the bushings and/or whole arm itself, pay the extra 50 bucks for 2 fresh ball joints (they are pressed into the knuckle and attach on the other end of the control arm), because if the arms/bushings are worn its good practice to replace related wear items in order to avoid future R&Rs

__________________
2018 Ram 2500 6.7L Cummins 68RFE
19k miles -Bright White/Black - Big Horn Sport - Crew Cab Short Bed
2013 X5 35D (CEO's) - Born on 5/17/2013 -
82k miles - Alpine White/Cinnamon Brown/Premium Pkg, Sport Activity/Premium Pkg and Sound/20" Style 214/Running Boards