The Wacker Neuson Piston Ring is a genuine OEM component designed for the RD27-100 and RD27-120 hydrostatic vibratory rollers, including standard and traction control configurations. As a direct OEM part sourced through Wacker Neuson's authorized supply chain, the is manufactured to the same specification as the original part it replaces, ensuring consistent sealing performance within the engine assembly. This piston ring fits across multiple machine numbers in the RD27 series, making it the correct choice whether you're servicing a standard or traction control model.
Key Features
- OEM Sealing Specification: — Manufactured to the original compression and oil-control tolerances required by the RD27 engine, maintaining proper cylinder pressure and minimizing oil consumption.
- Direct Engine Replacement: — Engineered to seat correctly in the existing piston groove without modification, restoring the cylinder-to-piston seal to as-built condition.
- Broad RD27 Series Coverage: — Compatible with RD27-100 and RD27-120 machines in both standard hydrostatic vibratory roller and traction control configurations across multiple machine numbers.
- Restored Engine Compression: — A worn or broken piston ring causes blow-by, power loss, and increased oil consumption; replacing with the correct OEM ring restores full compression and engine output to keep the roller productive.
- Fuel and Emissions Integrity: — Proper ring seal is critical to maintaining correct combustion efficiency; a failed ring can cause excessive fuel consumption and elevated exhaust emissions, making timely replacement a compliance consideration on regulated jobsites.
A piston ring forms a dynamic seal between the piston and the cylinder wall inside the engine, serving two key roles: it contains combustion pressure to drive the piston and it scrapes excess oil away from the cylinder wall to prevent it from burning in the combustion chamber. When a piston ring wears, cracks, or loses tension, the seal breaks down — combustion gases leak past the piston (a condition called blow-by), power drops noticeably, and oil burns off faster than normal. On a tandem roller like the RD27 series, where the engine must reliably drive both vibration and hydrostatic propulsion systems, a compromised piston ring can quickly escalate from an oil consumption issue into a full engine failure if left unaddressed.
Part Details
| Part Number | 5000161185 |
|---|---|
| Old Part Number | 0161185 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Piston Ring |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Hydrostatic Vibratory Roller | RD27-100 | 5000620393, 5000620508, 5000620510, 5000620512, 5000620037 |
| Hydrostatic Vibratory Roller | RD27-120 | 5000620394, 5000620509, 5000620511, 5000620513, 5000620038 |
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.
