The Wacker Neuson Piston Ring Set is a genuine OEM component designed for the D4000 Diesel Power Unit for Internal Vibrator and the L5000/225 series units, available in both ISO and ANSI configurations. As a direct OEM replacement, this set is manufactured to the exact tolerances required for proper cylinder sealing and compression integrity in these Wacker Neuson engines. Whether you are servicing the D4000 power unit or an L5000/225 drive unit, part number ensures a correct, like-for-like fit with no guesswork. Keep your equipment performing at spec by installing the part engineered specifically for these machines.
Key Features
- OEM Compression Tolerancing — Manufactured to exact ring gap and radial thickness specifications, ensuring proper cylinder sealing and sustained compression output across the engine's operating range.
- Drop-In Cylinder Replacement — Matched to the original piston and bore dimensions of the D4000 and L5000/225 engines, so the rings seat correctly without additional machining or fitting work.
- Covers Key Model Families — Compatible with the D4000 Diesel Power Unit for Internal Vibrator and L5000/225 units in both ISO and ANSI configurations.
- Restores Engine Compression and Oil Control — Worn or broken piston rings cause loss of compression, increased oil consumption, and reduced power output; replacing with a fresh OEM set restores the engine to proper operating condition.
- Genuine Wacker Neuson Part — Supplied as an authentic OEM component under part number 5000206139, sourced directly through the Wacker Neuson parts network.
Piston rings seal the gap between the piston and the cylinder wall, performing two critical jobs: maintaining compression in the combustion chamber and controlling the thin film of oil that lubricates the cylinder bore. When rings wear, lose tension, or break, combustion gases blow past the piston, compression drops, and oil is drawn into the combustion chamber — leading to rough running, excessive smoke, and accelerated internal wear. Replacing a worn ring set with a correctly specified OEM set restores the tight seal the engine needs to run efficiently and at full power.
Part Details
| Part Number | 5000206139 |
|---|---|
| Old Part Number | 0206139 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Piston Ring Set |
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.
