The Wacker Neuson Piston Complete is a genuine OEM component designed for the D4000 Diesel Power Unit for Internal Vibrator and the L5000/225 series, including both ISO and ANSI configurations. As a factory-sourced assembly, this Piston Complete is manufactured to the exact tolerances required by Wacker Neuson and ships as a ready-to-install unit — no additional machining or fitting required. Verified compatibility with the D4000, L5000/225 ISO, and L5000/225 ANSI models means you can order part number knowing it belongs in your machine.
Key Features
- OEM Dimensional Accuracy — Manufactured to Wacker Neuson's exact bore tolerances and surface finish specifications, ensuring correct compression and sealing performance in the cylinder.
- Complete Assembly — Supplied as a full Piston Complete, so rings, pin, and associated components are included and pre-matched — no sourcing individual sub-components separately.
- Confirmed Fitment — Directly replaces the original piston assembly in the D4000 Diesel Power Unit and L5000/225 ISO and ANSI power units.
- Compression Integrity Restored — A worn or damaged piston causes loss of compression, rough running, and reduced vibrator output; installing 5000206142 restores full engine performance.
- Genuine Wacker Neuson Part — Sourced directly through the Wacker Neuson OEM supply chain, carrying the same part number referenced in the original service documentation.
The piston is the core reciprocating component inside the engine cylinder, converting combustion pressure into the mechanical force that drives the crankshaft. It must maintain a precise fit against the cylinder wall to seal combustion gases and control oil consumption — if the piston or its rings wear excessively, compression drops, fuel efficiency suffers, and the engine may smoke or lose the power needed to drive the internal vibrator. Replacing a worn piston with a correctly specified complete assembly restores the engine's ability to develop full output and run at the duty cycles these power units are built for.
Part Details
| Part Number | 5000206142 |
|---|---|
| Old Part Number | 0206142 |
| 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.
