The Wacker Neuson 79805 is a genuine OEM Priming Plug designed for the PT and PTS series self-priming centrifugal trash pumps. As a direct factory replacement, part 79805 maintains the correct seal integrity required for the pump's priming system — a critical factor in getting these machines to move water quickly on the jobsite. This plug fits across a wide range of Wacker Neuson trash pump configurations, including PT2, PT3, PT6LT, PT6LS, PTS4V, PTK2, PTK3, PTK4, and PTK6 models. Sourcing the genuine OEM part ensures you get the correct thread spec and material for a dependable, leak-free seal every time.
Key Features
- Correct Thread Spec and Seal Material — Manufactured to OEM tolerances, ensuring a leak-free fit in the priming port with the correct thread engagement and sealing properties specific to Wacker Neuson trash pump housings.
- Genuine OEM Part — Sourced directly from Wacker Neuson; part number 79805 matches the original component exactly, so there's no guesswork on compatibility.
- Broad Fitment Across the PT and PTS Families — Compatible with PT2, PT3, PT6LT, PT6LS, PTS4V, PTK2, PTK3, PTK4, and PTK6 trash pump models, covering both skid-mounted and trailer-mounted configurations.
- Protects Prime and Suction Performance — A failed or missing priming plug allows air to enter the priming chamber, preventing the pump from developing suction and stopping water flow entirely. This plug keeps the system sealed and ready.
- Fuel and Fluid System Integrity — Proper sealing at the priming port prevents contamination ingress and ensures the pump primes consistently, even under demanding site conditions.
The priming plug seals the priming port on a self-priming centrifugal trash pump — the access point used to fill the pump casing with water before startup. Self-priming pumps require the casing to be filled initially so the impeller can generate the suction needed to draw fluid from the source. Without a properly seated priming plug, that water escapes, the pump loses prime, and flow stops. A cracked, stripped, or missing plug is one of the most common reasons a trash pump fails to move water on startup, making this small component essential to consistent pump operation.
Part Details
| Part Number | 79805 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Priming Plug |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| PT6LT Pump w/Trailer | PT6LT | 5000007175, 5200014740 |
| 150mm/6in Centrifugal Trash Pu mp Skid Mounted | PT6LS | 5000007174, 5200014741 |
| 100mm/4in Centrifugal Trash Pu mp | PTS4V | 5000007691, 5000007683, 5000620971, 5100031221 |
| PTK4(I)-PUMP KIT | PTK4 | 5000007692 |
| PTS4V(I) Pump | PTS4V(I) | 5000620972 |
| 50mm/2in Centrifugal Trash Pum p | PT2Y | 5000007117 |
| 75mm/3in Centrifugal Trash Pum p | PT3Y | 5000007118, 5000007119 |
| 50mm/2in Centrifugal Trash Pum p | PT2A | 5000006720, 5000006721 |
| 50mm/2in Centrifugal Trash Pum p | PT2B | 5000006722 |
| 75mm/3in Centrifugal Trash Pum p | PT3V | 5000007171 |
| 75mm/3in Centrifugal Trash Pum p | PT3A | 5000006729, 5000006730 |
| 50mm/2in Centrifugal Trash Pum p | PT2R | 5000007160, 5000006790 |
| PT 6LS | PT6LS(I) | 5200017427, 5200012427 |
| Trash Pump | PT6LT(I) | 5100014076 |
| Trash Pump | PTK6 | 5200007830 |
| 75mm/3in Centrifugal Trash Pum p Kit (without engin | PTK3 | 5000006747 |
| 50mm/2in Centrifugal Trash Pum p (without engine) | PTK2 | 5000006767 |
| 75mm/3in Centrifugal Trash Pum p | PT3B | 5000006731 |
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.
