The Wacker Neuson Temperature Switch, Engine Oil is a genuine OEM component designed for the RD18-80, RD18-100, and RD18-100 C tandem roller series. Sourced directly from Wacker Neuson, this switch meets the exact electrical and thermal specifications required for proper engine protection across all covered models. Fitment extends across a wide range of RD18 series configurations, including US and SE variants, as well as the RD18-80.3, RD18-100.3, and RD18-100c.3 model updates. When your roller needs a like-for-like replacement, part restores the engine monitoring system to its original operating standard.
Key Features
- Calibrated Switching Threshold — Genuine OEM construction ensures the switch opens and closes at the correct oil temperature set point, maintaining accurate engine protection response.
- Direct Drop-In Replacement — Matches the original connector type, thread pitch, and mounting configuration for a straightforward installation with no rework to existing wiring or hardware.
- Broad RD18 Series Coverage — Compatible with RD18-80, RD18-100, and RD18-100 C variants including US, SE, and .3-generation models across multiple serial number ranges.
- Engine Protection Integrity — A functioning oil temperature switch triggers the correct warning or shutdown response before damaging heat levels are reached; a failed switch can leave the engine running blind to overheating conditions.
- Critical Safety Circuit Component — As part of the engine protection system, correct switch operation is essential for preventing thermal damage and maintaining safe machine operation on site.
The engine oil temperature switch monitors the temperature of the engine oil and signals the control system when that temperature exceeds a safe operating threshold. On Wacker Neuson RD18 series tandem rollers, this triggers a warning or protective shutdown to prevent engine damage caused by overheating. When the switch fails or delivers an inaccurate reading, the engine loses a key layer of thermal protection, which can lead to costly internal damage that goes undetected until it is too late.
Part Details
| Part Number | 5100012861 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Temperature Switch, Engine Oil |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| RD18-80 Tandem Roller | RD18-80 | 5100011382, 5100047360, 5100055774 |
| RD18-100 Tandem Roller | RD18-100 | 5100011383, 5100047361, 5100055775 |
| RD18-100 C Tandem Roller | RD18-100 C | 5100011384 |
| RD18-80 Tandem Roller | RD18-80 US | 5100027572 |
| RD18-100 Tandem Roller | RD18-100 US | 5100027573 |
| RD18-100 C Tandem Roller | RD18-100 C US | 5100027574 |
| Vibration Roller | RD18-80 SE | 5100044988 |
| Vibration Roller | RD18-100 SE | 5100044989 |
| RD 18-100 C | RD18-100c | 5100047362, 5100055776 |
| Vibration Roller | RD18-100c 3 | 5100047363 |
| RD18-80.3 | RD18-80.3 | 5100055946 |
| RD18 | RD18-100.3 | 5100055947 |
| RD18-100c.3 | RD18-100c.3 | 5100055948 |
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.
