The Wacker Neuson Thermostat Valve is a genuine OEM component designed for RD27-100 and RD27-120 hydrostatic vibratory rollers. Sourced directly from Wacker Neuson, this part meets the exact specifications of the original component installed at the factory. Fitment covers multiple machine configurations across both the RD27-100 and RD27-120 series, so verify your machine number before ordering to confirm compatibility.
Key Features
- Genuine OEM Coolant Regulation: — Manufactured to Wacker Neuson's original flow and temperature-activation spec, ensuring the thermostat opens and closes at the correct threshold for this engine application.
- Drop-In Replacement: — Matches the original housing interface and sealing surfaces of the RD27-100 and RD27-120, allowing straightforward installation without reworking connections or mounts.
- Covers Key RD27 Configurations: — Compatible with multiple machine numbers across the RD27-100 and RD27-120 hydrostatic vibratory roller series; always cross-reference your machine number to confirm the correct variant.
- Protects Engine Operating Temperature: — A properly functioning thermostat keeps coolant circulating at the designed temperature window, preventing overheating or prolonged cold running that accelerates engine wear on the roller.
- Cooling System Integrity: — Thermostat failure can cause uncontrolled coolant flow, leading to overheating events that risk serious engine damage during compaction operations; replacing with a genuine OEM valve restores correct system behavior.
The thermostat valve regulates coolant flow between the engine and the radiator by opening and closing in response to coolant temperature. When the engine is cold, the valve remains closed to help the engine reach its optimal operating temperature quickly. Once the engine warms up, the valve opens to route coolant through the radiator for cooling. A failed or stuck thermostat — whether stuck open or closed — disrupts this balance, causing the engine to run too hot or too cold, both of which reduce efficiency and shorten engine life on the RD27 series roller.
Part Details
| Part Number | 5000161423 |
|---|---|
| Old Part Number | 0161423 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Thermostat Valve |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Hydrostatic Vibratory Roller | RD27-100 | 5000620007, 5000620037 |
| Hydrostatic Vibratory Roller | RD27-120 | 5000009469, 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.
