The Wacker Neuson Rotary Thermostat is a genuine OEM rotary thermostat designed for the BL744ch, BL744h, BL742h, BL744c, BL744 EX, and BL742 EX Backhoe Loader series. As a direct OEM part, the is manufactured to the exact specification of the original component it replaces, ensuring proper fit and correct operation within the cooling system. This rotary thermostat is the right choice for operators and technicians who need a dependable, like-for-like replacement that restores full cooling system control to their Wacker Neuson backhoe loader.
Key Features
- OEM-Calibrated Temperature Response — Manufactured to the precise opening temperature and flow-rate specification of the original, ensuring the cooling system cycles correctly under load.
- Drop-In Housing Compatibility — Engineered to match the original thermostat housing bore and seal seat on supported BL-series backhoe loaders, allowing a straightforward swap without machining or adapting.
- Broad BL-Series Coverage — Confirmed fitment across the BL744ch, BL744h, BL742h, BL744c, BL744 EX, and BL742 EX Backhoe Loader models.
- Protects Engine from Thermal Overload — A correctly functioning rotary thermostat keeps coolant temperature within the operating range, preventing the overheating that leads to head gasket failure and premature engine wear.
- Genuine Wacker Neuson Part — Sourced directly through the Wacker Neuson OEM supply chain, carrying part number 5100032588 for straightforward verification against your machine's parts manual.
A rotary thermostat regulates coolant flow between the engine and the radiator by opening and closing in response to coolant temperature. When the engine is cold, the thermostat stays closed, allowing the engine to reach its optimal operating temperature quickly. Once that threshold is reached, it opens to route hot coolant through the radiator for cooling. A failed or stuck thermostat — whether stuck open or closed — disrupts this balance, causing the engine to run either too cold and inefficiently, or too hot and at serious risk of damage.
Part Details
| Part Number | 5100032588 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Rotary Thermostat |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| BL744ch Backhoe Loader | BL744ch | 5100031800 |
| BL744h Backhoe Loader | BL744h | 5100031801 |
| BL742h Backhoe Loader | BL742h | 5100031802 |
| BL744c Backhoe Loader | BL744c EX | 5100031803 |
| BL744 EX Backhoe Loader | BL744 EX | 5100031804 |
| Backhoe Loader | BL742 EX | 5100031805 |
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.
