The Wacker Neuson 5100028408 Key is a genuine OEM component designed for PS2, PS3, and PS4 series submersible pumps. As an authentic Wacker Neuson part, the 5100028408 is manufactured to the exact tolerances required for proper shaft and impeller alignment within the pump assembly. Fitment covers a broad range of PS-series submersible pump configurations, including PS2-3703, PS3-3703, PS4-3703, PS3-5503, and PS4-5503 models across multiple voltage ratings. Sourcing a verified OEM replacement like this Key ensures the drive connection seats correctly without the risk of premature wear or slippage that an ill-fitting substitute can cause.
Key Features
- OEM-Matched Dimensions — Manufactured to exact width and depth tolerances required for positive engagement between the shaft and driven component in Wacker Neuson PS-series submersible pumps.
- Direct Drop-In Replacement — Seats into the existing keyway without filing or shimming, restoring the drive connection as originally assembled.
- Broad PS-Series Compatibility — Fits PS2-3703, PS3-3703, PS4-3703, PS3-5503, and PS4-5503 submersible pump models spanning multiple voltage and horsepower configurations.
- Protects Shaft and Hub — A correctly fitted Key prevents rotational slippage that can score the shaft or enlarge the keyway, protecting the more expensive components it connects.
- Genuine Wacker Neuson OEM Part — Sourced directly from Wacker Neuson, backed by the manufacturer's part number 5100028408 for confident identification and ordering.
A key is a small rectangular or square metal component that sits in a machined slot — called a keyway — cut into both a rotating shaft and the hub of the part it drives, such as an impeller or coupling. By locking the shaft and hub together rotationally, it transmits torque while still allowing the driven component to be removed for service. In a submersible pump, the key ensures the impeller spins in unison with the motor shaft; if the key shears or works loose, the impeller stops turning even while the motor runs, resulting in total loss of pumping output and potential damage to the shaft and hub surfaces.
Part Details
| Part Number | 5100028408 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Key |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| PS4-3703 | PS43703 | 5000008839, 5000008838 |
| PS3-3703 | PS33703 | 5000008833, 5000008832, 5000009136, 5000009135 |
| PS2-3703 | PS23703 | 5000008826 |
| PS4-5503 | PS45503 | 5000008850, 5000008851, 5000009144, 5000009145, 5000009202 |
| PS3-5503 | PS35503 | 5000008845, 5000008844, 5000009141, 5000009142, 5000009200 |
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.
