The Wacker Neuson Piston is a genuine OEM Piston designed for the PG1 Dewatering Pump. Sourced directly from Wacker Neuson, this part meets the exact specifications of the original component installed at the factory. As a genuine OEM part, it installs as a direct replacement with no guesswork — you get the right fit the first time. If your PG1 is losing pressure, pumping inefficiently, or showing signs of internal wear, replacing the piston with the correct OEM part is the straightforward path to restoring full pump output.
Key Features
- OEM Dimensional Accuracy — Manufactured to the exact bore diameter and compression height of the original, ensuring proper ring seal and consistent stroke volume within the pump cylinder.
- Direct Drop-In Replacement — Engineered to align with the existing connecting rod, wrist pin, and cylinder bore of the PG1, so installation follows the standard service procedure without additional fitting or machining.
- Compatible with the PG1 Dewatering Pump — Verified fitment for the Wacker Neuson PG1 series, so you can order with confidence for that specific machine.
- Restores Full Pumping Pressure — A worn or damaged piston causes loss of compression and reduced flow rate; replacing it with this OEM part brings pump output back to original specification.
- Genuine Wacker Neuson Part — Backed by Wacker Neuson's OEM supply chain, this piston is built from the same materials and to the same tolerances as the part it replaces.
The piston is the primary reciprocating component inside the pump's engine cylinder. It moves up and down to compress the air-fuel mixture, driving combustion that powers the pump's impeller and generates water flow. A piston that is worn, scored, or cracked reduces compression, causes hard starting, increases fuel consumption, and ultimately leads to a significant drop in pumping performance. Replacing a failed piston promptly prevents further damage to the cylinder walls and surrounding engine components, keeping repair costs contained.
Part Details
| Part Number | 5100031645 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Piston |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Dewatering Pump | PG1 | 5100031509 |
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.
