This kit is used to replace the internal needle and packings for Graco's SG20 and SGPro airless paint sprayer guns. Included in this kit is the needle, diffuser, a brass o-ring and a small packing nut. This gun repair kit is often needed when the gun starts to spit, there is a loss of pressure in the gun, or when a piece of dirt or debris may enter the gun.
For use with these model spray guns
218131
218133
246384
246385
243011
243012
