OEM
EW4040 Pump Model
Old Style 18mm
AAA 7105411 Unloader Knob is a replacement adjustment cap used on select AAA high‑pressure water and pressure washer pumps. It installs on the unloader valve to allow manual adjustment of system pressure. This part is commonly used on AAA series pumps with the older 18 mm unloader fitting. The knob for the new 27mm style is 7115021.
Features
- Compatibility: Fits AAA EW4040 pumps with 18mm old style unloader.
- Installation: Direct replacement, snaps onto the unloader.
- Certified: OEM direct from the manufacturer.
- Controls: Manual hand-turn
Compatible Brands/Models
| AAA | 7109267 EW4040 |
Cross References
| 7110290 |