This is American Pneumatic Tool part number 1280583517, listed as 03384 before the renumbering air inlet bushing, stocked at Crowder Supply as APT3384. It makes the air or hydraulic connection to the digger. Thread and sealing-face condition here is the difference between full pressure at the tool and a slow leak nobody notices.
You will find it on the diagram for the 119 Trench Digger and 133-T/1133-T Rivet Buster. The complete machine is the APT 119 Pneumatic Trench Digger. Compare it to the reference callout on the diagram to be sure it is the position you need.
Work through the rest of the assembly on the same breakdown, or start over from the parts diagram hub. Denver stock, with same-day shipment on in-stock orders in by 4 PM ET.
- Part number: 1280583517
- Previous part number: 03384
- Manufacturer: American Pneumatic Tool
- Crowder SKU: APT3384
- Listed on breakdowns for: 119 Trench Digger, 133-T/1133-T Rivet Buster

