The Wacker Neuson Cap Plug is a genuine OEM component designed for the PT2A, PT3A, and PT4A series self-priming centrifugal trash pumps, including indirect-drive variants. Sourced directly from Wacker Neuson, this cap plug meets the exact specifications of the original part it replaces. It fits across the full PT-series lineup — PT2A, PT3A, PT4A, PT2A(I), PT3A(I), and PT4A(I) — making it a versatile keep-on-hand replacement for fleet operators and service technicians alike. When you need an exact-fit solution to get your pump back in service, the delivers.
Key Features
- Genuine OEM Sealing Integrity — Manufactured to the original Wacker Neuson material and dimensional spec, ensuring a proper seal with no gaps, weeping, or pressure loss at the plug seat.
- Drop-In Replacement — Matches the original mounting point and plug geometry exactly, so installation requires no rework, trimming, or adapter fitting.
- Broad PT-Series Compatibility — Fits PT2A, PT3A, PT4A, PT2A(I), PT3A(I), and PT4A(I) trash pumps, covering both standard and indirect-drive configurations in Wacker Neuson's centrifugal pump lineup.
- Protects Internal Passages — Keeps fluid ports sealed during transport, storage, or service intervals, preventing debris ingestion and contamination that can damage pump internals.
- Fuel and Fluid System Compliance — As a fluid-system component on a pump, using the correct OEM cap plug maintains port integrity and ensures compatibility with the pump's operating pressures and fluid types.
A cap plug seals an open port or passage on the pump housing, preventing fluid leakage, contaminant entry, and pressure loss when a line or fitting is disconnected or the port is not in active use. On trash pumps like the PT-series, maintaining sealed ports is critical to preserving prime and protecting internal pump components from debris. A missing, cracked, or poorly fitting cap plug can allow air infiltration or contamination that compromises pump performance and risks damage to the volute and impeller over time.
Part Details
| Part Number | 5100050886 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Cap Plug |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| PT2A | PT2A | 5100042215 |
| PT3A | PT3A | 5100042216 |
| PT4A | PT4A | 5100042217, 5100042604 |
| PT2A(I) | PT2A(I) | 5100042613 |
| PT3A(I) | PT3A(I) | 5100042614 |
| 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.
