The Wacker Neuson Plug 1/4 NPT is a genuine OEM component designed for PDT3A, PDI3A, PDI3A(I), PDT2A, and PDI2A(I) series diaphragm pumps. As a factory-sourced part, the is manufactured to the same specifications as the original, ensuring a correct thread fit in the pump body without modification or rework. This plug is an exact match for the 1/4 NPT port it seals, giving you confidence that the replacement will perform just as the original did. Verify your model number against the fitment list below before ordering to confirm compatibility with your specific pump configuration.
Key Features
- Correct NPT Thread Specification — Genuine OEM sourcing means the 1/4 NPT thread form and taper match the port precisely, seating flush without cross-threading or leakage risk.
- Genuine Wacker Neuson Part — Sourced directly from Wacker Neuson, this plug meets the original material and dimensional standards required for pump housing integrity.
- Broad Diaphragm Pump Compatibility — Fits PDT3A, PDI3A, PDI3A(I) Pump Diaphragm, PDT2A, and PDI2A(I) Pump models, covering a wide range of Wacker Neuson diaphragm pump configurations.
- Leak-Free Port Sealing — A correctly fitted plug keeps unused or service ports fully sealed, preventing fluid ingress or pressure loss that can compromise pump output and priming performance.
- Fluid System Safety — A failed or missing port plug can allow pumped media or priming fluid to escape, creating a spill hazard on site; replacing it promptly restores safe operating conditions.
- Drop-In Service Replacement — Threaded directly into the existing 1/4 NPT port with standard tooling — no adapters, thread chasing, or additional hardware required.
A 1/4 NPT plug is a threaded closure used to seal off an unused or access port in the pump housing or fluid circuit. It creates a pressure-tight seal by engaging the tapered National Pipe Thread form, preventing leaks at any port that is not actively connected to a line or fitting. When a plug is damaged, missing, or cross-threaded, that port becomes a path for fluid to escape or contaminants to enter, which can cause loss of prime, reduced pump efficiency, or fluid spills that create unsafe working conditions.
Part Details
| Part Number | 5100075512 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Plug 1/4 NPT |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| PDT3A | PDT3A | 5100075507 |
| PDI3A | PDI3A | 5100075508 |
| PDI3A(I) PUMP DIAPHRAGM | PDI3A(I) | 5100075509 |
| PDT2A | PDT2A | 5100075510 |
| PDI2A(I) PUMP | PDI2A(I) | 5100075511 |
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.
