$36.00
This is the air valve fitting for the Graco Fusion FX spray gun. Graco's service manual lists it as the air valve fitting, the exploded diagram uses the same name, and Graco lists it as an air adapter kit.
Order it when the fitting is damaged or leaking. It is listed for the Fusion FX and supplied as a Graco kit. Fittings like this are easy to overlook during a rebuild, so check its condition while the gun is already apart rather than refitting the original. The FX exploded diagram will confirm the fitting is the part you are after.
Genuine Graco OEM part 2001148.