The Wacker Neuson Water Temperature Switch is a genuine OEM component designed for the RD27-100 and RD27-120 series Hydrostatic Vibratory Rollers, including models RD27-100, RD27-120. Sourced directly from Wacker Neuson, this is the same switch built into these machines at the factory — ensuring correct calibration, connector compatibility, and sensing accuracy right out of the box. Part number covers an extensive range of RD27-100 and RD27-120 configurations, making it the go-to replacement for this roller series. When it comes to engine protection components like a water temperature switch, using the genuine OEM part means you're not guessing at thresholds or tolerances.
Key Features
- Calibrated Sensing Accuracy — Genuine OEM construction ensures the switch activates at the correct coolant temperature threshold, protecting the engine from overheating events.
- Direct Connector Match — Plugs directly into the existing wiring harness on RD27-100 and RD27-120 rollers with no splicing, adapting, or re-pinning required.
- Broad RD27 Series Coverage — Fits both RD27-100 and RD27-120 Hydrostatic Vibratory Roller variants, including standard and Traction Control-equipped machines across multiple build configurations.
- Engine Overtemperature Protection — A functioning water temperature switch triggers timely alerts or shutdowns before heat damage occurs; a failed switch can leave the engine running unprotected into a damaging overtemperature condition.
- Critical Electrical Safety Compliance — As part of the machine's engine protection circuit, using the correctly rated OEM switch ensures the thermal cutout system operates within its designed parameters.
The water temperature switch monitors coolant temperature in the engine cooling system and sends a signal to the machine's instrument panel or control system when the temperature exceeds a safe operating threshold. This triggers a warning light, alarm, or automatic shutdown depending on the machine's configuration — giving the operator or the system a chance to intervene before heat causes serious engine damage. When the switch fails, the cooling system loses its early-warning capability, and an overheating engine may run unprotected until major mechanical damage occurs.
Part Details
| Part Number | 5000215954 |
|---|---|
| Old Part Number | 0215954 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Water Temperature Switch |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Hydrostatic Vibratory Roller | RD27-100 | 5000620393, 5000620508, 5000620510, 5000620512, 5000620395, 5200009322 |
| Hydrostatic Vibratory Roller | RD27-120 | 5000620394, 5000620509, 5000620511, 5000620513, 5000620396, 5200009323 |
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.
