The Wacker Neuson Piston 1B20 Epa2 is a genuine OEM component designed for the PT2H pump series, DPS1850H Basic, DPS1850H Asphalt, DPS1850H Vario, and DPU2540H, DPU2550H, and DPU2560H series machines. As a direct Wacker Neuson factory part, the meets the original engineering tolerances and EPA Tier 2 compliance requirements specified for these engines. It drops into place using the same installation procedure as the original, with no rework or adaptation to the surrounding engine components. If your machine is losing compression, burning oil, or showing uneven power output, replacing the piston with a genuine restores the engine to proper operating condition.
Key Features
- EPA Tier 2 Compliant Construction — Purpose-built to meet EPA2 emissions standards, ensuring your machine stays compliant with environmental regulations right out of the box.
- OEM-Matched Bore Tolerances — Manufactured to the exact dimensional specifications of the original 1B20 engine design, ensuring correct ring seal and compression retention without cylinder wear acceleration.
- Broad Series Compatibility — Fits PT2H centrifugal trash pumps, DPS1850H compaction plates (Basic, Asphalt, and Vario configurations), and DPU2540H, DPU2550H, DPU2560H, and DPU2560H-TS vibratory plates.
- Compression Integrity Restored — A correctly fitted piston maintains cylinder pressure and fuel combustion efficiency, directly supporting consistent power output and fuel economy across the operating range.
- Genuine Wacker Neuson Part — Sourced directly from Wacker Neuson, part number 5000209661 carries the full backing of the manufacturer and is the same component installed on the production line.
The piston is the core reciprocating component inside the engine cylinder. It converts the force of combustion into the mechanical motion that drives your pump or compaction plate. As the piston travels up and down, its rings maintain a tight seal against the cylinder wall, keeping combustion gases above the piston and oil below it. When a piston wears, cracks, or loses ring sealing, the result is lost compression, increased oil consumption, rough running, and eventually engine failure — making timely replacement critical to keeping the machine productive on site.
Part Details
| Part Number | 5000209661 |
|---|---|
| Old Part Number | 0209661 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Piston 1B20 Epa2 |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| PT2H Pump | PT2H | 5000009094, 5000009097, 5000009239 |
| DPS1850H Basic | DPS1850H Basic | 5000610032 |
| DPS1850H Asphalt | DPS1850H Asphalt | 5000610033 |
| DPS1850H Vario | DPS1850H Vario | 5000610034 |
| DPU2540H | DPU 2540H | 5000610035 |
| DPU 2550H | DPU 2550H | 5000610036 |
| DPU 2560H | DPU 2560H | 5000610037 |
| DPU 2560H-TS | DPU 2560H-TS | 5000610038 |
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.
