The Wacker Neuson -01 Temperature Switch is a genuine OEM component designed for the CRT48-33K and CRT48-33K DF ride-on concrete trowels. As a factory-sourced part, it meets the exact electrical and thermal specifications required by these machines, ensuring the engine protection system operates as intended. This switch is confirmed to fit both the standard CRT48-33K and the Dual-Fuel CRT48-33K DF variants covered under this part number.
Key Features
- Correct Thermal Activation Threshold — Genuine OEM calibration ensures the switch trips at the precise temperature set point the engine management system expects, preventing nuisance shutdowns or missed overheating events.
- Direct Plug-In Replacement — Matches the original connector, thread pitch, and housing profile for a straight swap with no modification to wiring harness or mounting.
- Broad CRT48-33K Coverage — Fits both the standard CRT48-33K and the Dual-Fuel CRT48-33K DF ride-on concrete trowels, covering multiple serial number ranges under a single part number.
- Engine Protection You Can Count On — A properly functioning temperature switch triggers an automatic shutdown before heat damage reaches critical engine components; a failed switch can leave your machine running unprotected into an overheat condition.
- Electrical Safety Compliance — As a direct participant in the engine's protective circuit, using the correct OEM-specified switch maintains the integrity of the safety shutoff system on commercial ride-on trowel equipment.
A temperature switch monitors engine coolant or oil temperature and sends a signal to the control system when a set thermal threshold is exceeded. On ride-on concrete trowels like the CRT48-33K, this triggers an automatic engine shutdown to prevent heat-related damage to internal components. When the switch fails — either sticking open or closed — the machine may shut down unexpectedly during a pour or, more critically, continue running past safe operating temperatures without any warning, risking costly engine damage.
Part Details
| Part Number | 503 66 56-01 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Temperature Switch |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| CRT48-33K | CRT48-33K | 5200002353 |
| CRT48-33K Trowel, Dual-Fuel | CRT48-33K DF | 5200007686, 5200007687 |
| CRT48-33K | CRT48-33k | 5200002354 |
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.
