The Wacker Neuson is a genuine OEM 7 X 7 X 22 Key designed for PSC42203 and PSC42303EX series submersible pumps. Sourced directly from Wacker Neuson, this key is manufactured to the exact dimensions and material specification required for proper shaft-to-hub engagement in these pump models. It fits both the standard PSC42203 and the PSC42303EX submersible pump variants, making it the correct choice when servicing either machine. Keeping this small but critical component in good condition ensures the pump drivetrain transmits torque correctly and operates as intended.
Key Features
- Genuine OEM Dimensional Accuracy — Manufactured to the exact 7 x 7 x 22 mm profile required for correct shaft-to-keyway engagement, with no material deviation from the original spec.
- Direct Fit for PSC Submersible Pumps — Confirmed compatibility with the PSC42203 and PSC42303EX submersible pump models; slots directly into the existing keyway without modification.
- Torque Transfer Integrity — A correctly sized key locks the impeller or drive component to the shaft, ensuring full power transmission and preventing slippage under pump load.
- Wear and Shear Protection — OEM material grade resists the deformation and shear failure that can occur with undersized or worn keys, protecting both the shaft and the mating hub.
- Essential Service Component — Often overlooked during pump rebuilds, replacing this key during impeller or seal service restores the drivetrain to as-built condition.
A woodruff or parallel key like the 5000176902 is a small, precisely dimensioned piece of metal that sits in a machined slot — called a keyway — between a rotating shaft and a mating hub or impeller. Its function is to lock those two components together rotationally so that torque from the motor transfers cleanly to the pump impeller. When a key wears, corrodes, or shears, the shaft spins independently of the impeller, causing the pump to lose flow output entirely — even though the motor continues to run. Replacing a damaged or worn key is a straightforward repair that restores full pump performance without the need to replace more expensive drivetrain components.
Part Details
| Part Number | 5000176902 |
|---|---|
| Old Part Number | 0176902 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | 7 X 7 X 22 Key |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| 3~Submersible Pumps | PSC42203 | 5000620469 |
| 3~Submersible Pumps | PSC42303EX | 5000620472 |
Verify Before You Order
Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.
Why Buy From DHS Equipment
Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.
Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.
