

The Graco 164118 Shaft is an OEM cam/drive shaft for select Graco spray guns. Use it to restore smooth trigger-to-valve actuation—always verify by your model’s parts list before ordering.
Quick facts you can check at a glance:
The Graco 164118 Shaft is an OEM internal shaft (cam/drive shaft) used in select Graco spray guns. Confirm your exact model against its parts list before ordering.
The Graco 164118 Shaft operates within the gun’s trigger/valve mechanism to transfer motion and reliably open/close the fluid passage. Typical service involves inspecting packings, gland nuts, and the trigger/cam interface during replacement.
| Part Number | 164118 |
|---|---|
| Item Type | Shaft (cam/drive shaft for spray gun mechanism) |
| Category | Gun Internal Components / Actuation |
| What’s Typically Checked Together | Trigger lever, cam interface, packings, gland/packing nuts, bushings |