The Wacker Neuson Piston Complete is a genuine OEM component designed for the D4000 Diesel Power Unit for Internal Vibrator and the L5000/225 ISO and L5000/225 ANSI power units. As a factory-sourced assembly, this Piston Complete is manufactured to the exact tolerances required by Wacker Neuson, ensuring a proper fit within the engine block without the need for modification or machining. Genuine OEM designation means this part carries the same specification as the unit that left the factory floor. Verify your model number against the fitment list before ordering to confirm compatibility with your specific machine configuration.
Key Features
- OEM Dimensional Accuracy — Manufactured to Wacker Neuson's exact bore diameter, ring groove, and pin bore tolerances, ensuring correct compression and sealing performance within the cylinder.
- Complete Piston Assembly — Supplied as a fully assembled unit, so rings, pin, and piston body arrive ready to install as a matched set with no component sourcing required.
- Direct Fitment for D4000 and L5000/225 Units — Confirmed fit for the D4000 Diesel Power Unit for Internal Vibrator and both the L5000/225 ISO and L5000/225 ANSI configurations.
- Restores Full Engine Compression — A worn or scored piston causes loss of compression, increased oil consumption, and rough running; replacing with a correct-spec Piston Complete brings the engine back to proper operating output.
- Sourced Directly from Wacker Neuson — Genuine OEM part number 5000206143 ensures you are receiving the authorized replacement, not a substitute component that may differ in alloy grade or dimensional spec.
The piston is a core reciprocating component inside the engine cylinder, converting the pressure generated by combustion into the mechanical force that drives the crankshaft. It works in conjunction with the piston rings to maintain a tight seal against the cylinder wall, controlling compression and preventing oil from entering the combustion chamber. When a piston wears, cracks, or suffers ring land damage, compression drops, oil consumption rises, and the engine loses the power output needed to drive the vibrator or other connected equipment effectively — making timely replacement essential to keeping the unit productive.
Part Details
| Part Number | 5000206143 |
|---|---|
| Old Part Number | 0206143 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Piston Complete |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Diesel Power Unit for Internal Vibrator | D4000 | 5000009091 |
| L5000/225 ISO | L5000/225 ISO | 5000610329 |
| L5000/225 ANSI | L5000/225 ANSI | 5000610341 |
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.
