The Wacker Neuson Impeller is a genuine OEM component designed for PT4A and PT4A(I) series self-priming centrifugal trash pumps. As a direct-from-manufacturer part, it meets the exact material and dimensional standards set for these pumps, ensuring the hydraulic performance you expect straight out of the box. This impeller is confirmed to fit the PT4A and PT4A(I) models, making it a straightforward drop-in service replacement. When your pump's flow rate drops or priming becomes sluggish, a worn impeller is one of the first components to inspect — and this is the correct OEM replacement to restore full output.
Key Features
- Genuine OEM Hydraulic Accuracy — Manufactured to the precise vane geometry and balance tolerances required to maintain rated flow and head pressure in PT4A series pumps.
- Direct-Fit Replacement — Machined to match the original bore and hub dimensions, seating correctly onto the pump shaft without modification.
- Confirmed Fitment — Compatible with PT4A and PT4A(I) self-priming centrifugal trash pumps across multiple build configurations.
- Restored Pump Output — A correctly spec'd impeller maintains the rotational energy transfer needed to sustain full suction lift and discharge volume — a degraded impeller causes noticeable loss of prime and throughput.
- Corrosion and Wear Resistance — Built from materials selected by Wacker Neuson to handle the abrasive slurry and debris loads that trash pump applications routinely demand.
The impeller is the rotating core of a centrifugal pump's hydraulic system. As it spins, its curved vanes accelerate incoming fluid outward by centrifugal force, converting shaft energy into flow and pressure. In a trash pump like the PT4A, the impeller must also tolerate suspended solids and abrasive particles without losing its profile. When the impeller wears — through cavitation, abrasion, or impact from debris — the pump loses suction lift, flow rate drops, and the unit may struggle to prime at all. Replacing a worn impeller with the correct OEM part restores the pump to its original hydraulic performance.
Part Details
| Part Number | 5100044575 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Impeller |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| PT4A | PT4A | 5100042217, 5100042604 |
| PT4A(I) | PT4A(I) | 5100042615 |
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.
