

Part 0551522 is a replacement knob housing for compatible Advantage, Impact, RentSpray, and SprayTech equipment. This housing encloses and supports control knobs, providing a mounting surface and protecting internal components. When the original housing becomes cracked, damaged, or worn, replacement restores proper control function and appearance.
| Part Number | 0551522 |
|---|---|
| Part Description | Knob Housing |
| Brand | Universal |
| Fits | Advantage 400; Advantage 500; Impact 410; RentSpray 400; SprayTech Airless Advantage EPX2155; SprayTech Airless Advantage EPX2255; SprayTech Airless EPX2155; SprayTech Airless EPX2255 |
| Condition | New |
The 0551522 knob housing is a direct replacement structural and protective component for Advantage 400, Advantage 500, Impact 410, RentSpray 400, SprayTech Airless Advantage EPX2155, SprayTech Airless Advantage EPX2255, SprayTech Airless EPX2155, and SprayTech Airless EPX2255 equipment. This housing is typically located on the control panel or console, where it encloses and supports one or more control knobs used for adjusting machine functions such as pressure, flow, or other settings. The housing provides a stable mounting surface for the knobs, protects the internal components (such as potentiometers or valve stems) from damage and contamination, and contributes to the overall appearance of the machine. A cracked, damaged, or worn housing can lead to loose or misaligned knobs, difficult operation, and exposure of internal parts to debris. This replacement housing is manufactured to exact specifications for proper fit, knob alignment, and mounting hole locations. Installation requires transferring knobs and any internal components to the new housing. Regular inspection helps identify housing damage before it affects control function.
| Knob support | Provides stable mounting for control knobs |
|---|---|
| Component protection | Encloses and protects internal parts |
| Alignment maintenance | Ensures proper knob positioning |
| Cracked / broken | Housing damaged, compromising support |
|---|---|
| Worn mounting points | Knobs no longer secure |
| Misaligned knobs | Knobs bind or do not align properly |
| Cosmetic damage | Appearance affected, but function may still be OK |
Knob housing 0551522 is compatible with the following models. Verify fit using your equipment's parts diagram.
| Compatible Models |
|---|
| Advantage 400 |
| Advantage 500 |
| Impact 410 |
| RentSpray 400 |
| SprayTech Airless Advantage EPX2155 |
| SprayTech Airless Advantage EPX2255 |
| SprayTech Airless EPX2155 |
| SprayTech Airless EPX2255 |
When replacing the knob housing, inspect these associated components to ensure proper control function.
Check for wear or damage; replace if needed.
Inspect for proper operation.
Replace screws or nuts if corroded.