The Wacker Neuson Lock Nut is a genuine OEM component designed for the PT2 and PT3 series self-priming centrifugal trash pumps, including PT2A, PT2H, PT2V, PT3A, PT3H, and PT3V variants. As a direct OEM replacement, this lock nut is manufactured to the exact specification required by Wacker Neuson, ensuring a correct, secure fit without guesswork. Whether you're servicing a 50mm/2-inch or 75mm/3-inch pump, part number is the verified hardware for the job. Keep a spare on hand to avoid delays during routine maintenance or field repairs.
Key Features
- Genuine OEM Hardware Integrity — Manufactured to Wacker Neuson's exact thread pitch and torque specification, so the fastener holds under the vibration loads typical of pump operation.
- Drop-In Replacement — Threads directly into the existing position with no modification; matches the original installation point on PT2 and PT3 pump assemblies.
- Broad PT-Series Compatibility — Fits PT2, PT2A, PT2H, PT2V, PT3, PT3A, PT3H, and PT3V models across multiple serial number ranges, covering a wide installed base of Wacker Neuson trash pumps.
- Maintains Pump Integrity Under Load — A properly torqued lock nut prevents loosening from engine and impeller vibration; a missing or worn nut can lead to component shift, misalignment, and pump failure in the field.
- Verified Part Number — Sold under Wacker Neuson part number 5000119980, cross-referenced across PT2 and PT3 pump configurations for accurate ordering confidence.
A lock nut is a prevailing-torque or locking-style fastener designed to resist loosening when exposed to continuous vibration and dynamic loads — conditions that are a constant reality on engine-driven trash pumps. On Wacker Neuson PT-series pumps, the lock nut secures critical rotating or structural components within the pump assembly, keeping everything properly positioned during operation. When a lock nut loosens, wears, or is lost during service, it can allow components to shift, which leads to vibration, accelerated wear on adjacent parts, and potential pump failure — making this a small part with an outsized impact on pump reliability.
Part Details
| Part Number | 5000119980 |
|---|---|
| Old Part Number | 0119980 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Lock Nut |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| PT3H Pump | PT3H | 5000009100, 5000009103, 5000009242, 5100014963, 5100014964 |
| PT2H Pump | PT2H | 5000009094, 5000009097, 5000009239, 5200007593 |
| 75mm/3in Centrifugal Trash Pum p | PT3A | 5000009098, 5000009101, 5000009240, 5000620800, 5100058535, 5100058536 |
| PT2A Pump | PT2A | 5000009092, 5000009095, 5000009237, 5100058524, 5100058525 |
| PT3 Pump | PT3 | 5000009321, 5000620726, 5000009322, 5000009323 |
| PT2 Pump | PT2 | 5000009318, 5000620725, 5000009319, 5000009320 |
| 50mm/2in Centrifugal Trash Pum p | PT2V | 5000009238, 5000009093, 5000009096 |
| 75mm/3in Centrifugal Trash Pum p | PT3V | 5000009102, 5000009241 |
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.
