The Multiquip 12850579 Water Thermostat Assembly F3M1008F LT12D is a genuine OEM component designed for LT12D light towers equipped with the Lombardini F3M1008F diesel engine. As a factory-sourced part, it meets the exact fit and performance specifications required by Multiquip for this engine and machine pairing. This assembly is the correct replacement for LT12D units experiencing cooling system irregularities caused by a worn or failed thermostat. Order with confidence knowing this part matches the original component installed at the factory.
Key Features
- Genuine OEM Cooling Precision — Manufactured to the exact opening temperature and flow specifications of the original Lombardini F3M1008F thermostat, ensuring accurate coolant regulation under load.
- Direct Assembly Replacement — Supplied as a complete thermostat assembly, dropping into the existing housing on the F3M1008F engine without additional fabrication or adaptation hardware.
- Confirmed LT12D Fitment — Verified for use on Multiquip LT12D Lombardini-powered light towers; use model code LT12D to confirm compatibility before ordering.
- Protects Engine from Thermal Damage — A properly functioning thermostat keeps coolant temperature in the safe operating range, preventing overheating that can cause head gasket failure or engine seizure during extended light tower operation.
- Cooling System Compliance — On diesel-powered equipment, an out-of-spec thermostat can trigger thermal runaway or overcooling, both of which affect emissions compliance and engine longevity; using the correct OEM assembly addresses this directly.
The water thermostat assembly controls when coolant flows from the engine to the radiator by opening and closing based on coolant temperature. When the engine is cold, the thermostat stays closed to help the engine reach operating temperature quickly and efficiently. Once the correct temperature is reached, it opens to allow coolant to circulate through the radiator and carry heat away. A failed thermostat — whether stuck open or stuck closed — leads to either chronic overcooling, which increases wear and fuel consumption, or overheating, which can cause serious engine damage during light tower operation.
For questions about fitment or to confirm this is the correct part for your LT12D light tower, contact the DHS Equipment parts team directly.
Part Details
| Part Number | 12850579 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Water Thermostat Assembly F3M1008F LT12D |
Compatibility & Fitment
| Name | Model |
|---|---|
| LT12D | LT12D |
| F3M1008F | F3M1008F |
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.
