

The Graco 803921 Washer is a genuine OEM replacement part used in Graco pressure washer pump assemblies to help distribute load and maintain secure fastening of internal components.
The Graco 803921 Washer is an OEM replacement component used inside specific Graco pressure washer pump assemblies. This washer helps distribute pressure evenly between internal pump parts, ensuring proper alignment and secure fastening during operation.
Designed for durability and precision, the washer plays a small but important role in maintaining the stability of internal pump hardware. Using the correct OEM washer helps prevent uneven stress on pump components and supports long-term equipment performance.
The Graco 803921 Washer is commonly installed within pressure washer pump assemblies where washers are required to support nuts, pistons, and other internal components. It contributes to maintaining proper spacing and protecting pump parts from uneven tightening pressure.
| Part Number | 803921 |
|---|---|
| Part Type | Washer |
| Manufacturer | Graco |
| Application | Pressure Washer Pump Assembly |
| Function | Supports and distributes pressure between pump components |