The Wacker Neuson is a genuine OEM Welch Plug designed for use across multiple Wacker Neuson equipment families. This part is confirmed to fit the CT36BDT and CT36BDT-E 915mm/36in walk-behind concrete trowels, PT2B 50mm/2in centrifugal trash pumps, PDT2B 50mm/2in diaphragm trash pumps, and the B 3000 and B 5000 gasoline power units for internal vibrators. As a genuine OEM component, the Wacker Neuson is manufactured to the same standards as the original part it replaces, ensuring a correct, trouble-free installation without guesswork. Keep part number on hand as a service spare to keep your equipment operating through routine maintenance and engine servicing.
Key Features
- Genuine OEM Sealing Integrity — Manufactured to original specification, this Welch Plug delivers the precise interference fit needed to seal oil or coolant passages and prevent internal leakage.
- Drop-In Engine Service Replacement — Pressed directly into the machined bore of the engine block or housing, this plug installs using standard service tooling with no rework to the surrounding bore required.
- Broad Cross-Family Fitment — A single part number covers the CT36BDT and CT36BDT-E walk-behind trowels, PT2B and PDT2B trash pumps, and B 3000 and B 5000 gasoline power units, making it a versatile service stock item.
- Leak Prevention at the Source — A correctly seated Welch Plug maintains closed internal passages in the engine; a failed or missing plug allows fluid loss, loss of lubrication pressure, and accelerated engine wear.
- Fuel System and Lubrication Safety — On fuel and oil-passage applications, a properly installed Welch Plug is critical to maintaining system pressure and preventing hazardous fluid seepage during operation.
A Welch Plug — sometimes called a Welsh plug or expansion plug — is a pressed-steel disc used to seal casting holes left in engine blocks and housings during the manufacturing process. These holes are created to allow access for machining internal oil galleries, coolant passages, or other bores, and must be permanently sealed before the engine is assembled and put into service. When a Welch Plug corrodes, loosens, or is displaced, it breaks the seal on that passage, causing fluid to escape — which can result in loss of lubrication pressure, overheating, or fluid contamination. Replacing a failed plug promptly during routine engine service restores the integrity of the affected passage and protects the engine from secondary damage.
Part Details
| Part Number | 5000077026 |
|---|---|
| Old Part Number | 0077026 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Welch Plug |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| 915mm/36in Walk-behind Trowel | CT36BDT | 5000008009 |
| 50mm/2in Centrifugal Trash Pum p | PT2B | 5000006722 |
| Gasoline Power Unit for Intern al Vibrator | B 3000 | 5000005829 |
| Gasoline Power Unit for Intern al Vibrator | B 5000 | 5000007522, 5000006307 |
| 915mm/36in Walk-behind Trowel | CT36BDT-E | 5000008010 |
| 50mm/2in Diaphragm Trash Pump | PDT2B | 5000007612, 5000007613 |
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.
