The Wacker Neuson 5100044578 Housing is a genuine OEM component designed for the PT4A and PT4A(I) series self-priming centrifugal trash pumps. As a direct OEM replacement, this housing is manufactured to the same specifications as the original, ensuring a correct, trouble-free installation with no guesswork on fit or compatibility. Verified fitment covers both the PT4A and PT4A(I) models, making this the right part for the most common configurations in this pump family. Keep a spare on hand for high-demand jobsite use where pump uptime is critical.
Key Features
- Genuine OEM Construction — Manufactured by Wacker Neuson to original tolerances, ensuring the housing walls, inlet and outlet ports, and mating surfaces maintain the hydraulic integrity needed for full pump output.
- Direct Drop-In Replacement — Matches the original mounting pattern and port geometry of the PT4A and PT4A(I), allowing straightforward reinstallation without rework or additional machining.
- Confirmed PT4A and PT4A(I) Fitment — Verified across multiple PT4A machine configurations, covering both standard and indirect variants in this 4-inch discharge trash pump family.
- Protects Pump Efficiency — A structurally sound housing maintains correct internal clearances between the impeller and volute, preserving flow rate and priming performance. A cracked or worn housing causes pressure loss and reduced pumping capacity.
- Fuel and Fluid Integrity — The housing forms the primary containment boundary for pumped fluid; an OEM-spec replacement prevents leaks that could create site hazards or environmental compliance issues.
The pump housing forms the main structural shell of the centrifugal pump assembly, enclosing the impeller and directing fluid flow from the inlet through the volute and out the discharge port. It must maintain a tight, consistent internal geometry to sustain the pressure differential that drives pumping action — even small cracks, erosion damage, or warped sealing surfaces will cause the pump to lose prime, reduce output volume, or leak fluid entirely. Replacing a damaged housing with a genuine OEM unit restores the original flow path geometry and sealing surfaces, returning the pump to full operational capacity.
Part Details
| Part Number | 5100044578 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Housing |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| PT4A(I) | PT4A(I) | 5100042615 |
| PT4A | PT4A | 5100042604, 5100042217 |
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.
