The Wacker Neuson Plug (Threaded) is a genuine OEM component designed for the PDT2, PDT3, PDI2, PDI3, and PD3B series diaphragm trash pumps. As a direct factory replacement, this threaded plug is manufactured to the exact specifications required to maintain a proper fluid seal within the pump body. It fits across a wide range of 50mm/2in and 75mm/3in diaphragm and inline diaphragm trash pump configurations in the Wacker Neuson lineup. Ordering by confirmed part number ensures you receive the correct plug for your specific pump model.
Key Features
- Exact Thread Specification: — Manufactured to OEM thread pitch and dimensions, ensuring a flush, leak-free seat against the pump housing without reworking the port.
- Genuine OEM Part: — Sourced directly from Wacker Neuson, this plug meets the same sealing and pressure-retention standards as the original component installed at the factory.
- Broad Diaphragm Pump Fitment: — Compatible with PDT2, PDT2A, PDT2B, PDT3, PDT3A, PDI2, PDI2A, PDI3, PDI3A, and PD3B series pumps covering both 50mm/2in and 75mm/3in discharge sizes.
- Maintains Pump Integrity: — A correctly seated threaded plug prevents fluid bypass and pressure loss, keeping the diaphragm pump operating at full prime and output capacity.
- Leak Prevention: — A failed or missing threaded plug can allow air ingestion or fluid escape at the port, causing loss of prime and pump cavitation — replacing it promptly restores full pumping efficiency.
A threaded plug is used to close and seal an unused or service port on the pump body or manifold, preventing fluid leakage and maintaining internal pressure across the diaphragm pump system. In diaphragm trash pumps, maintaining a complete seal at every port is critical — any air infiltration or fluid escape at an open port will break pump prime and reduce output flow significantly. When a threaded plug is damaged, cross-threaded, or missing entirely, the pump will struggle to self-prime and may run dry, accelerating wear on the diaphragm and valve assemblies.
Part Details
| Part Number | 5000051298 |
|---|---|
| Old Part Number | 0051298 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Plug (Threaded) |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| 50mm/2in Diaphragm Trash Pump | PDT2A | 5000007610, 5000007611 |
| 75mm/3in Diaphragm Trash Pump | PDT3A | 5000007614, 5000007615, 5000007616 |
| 50mm/2in Inline Diaphragm Tras h Pump | PDI2A | 5000007624, 5000007625 |
| 75mm/3in Inline Diaphragm Tras h Pump | PDI3A | 5000007628, 5000007629, 5000009407 |
| 50mm/2in Diaphragm Trash Pump | PDT2 | 5000009494, 5000007633 |
| 75mm/3in Diaphragm Trash Pumps | PDT3 | 5000009495, 5000007619 |
| 50mm/2in Diaphragm Trash Pump | PDI2 | 5000009489 |
| 75mm/3in Diaphragm Pump | PD3B | 5000006802 |
| 50mm/2in Diaphragm Trash Pump | PDT2B | 5000007612, 5000007613 |
| 75mm/3in Diaphragm Trash Pump | PDI3 | 5000009491, 5000009492 |
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.
