Multiquip 1943473014 Thermostat Assembly

The Multiquip 1943473014 Thermostat Assembly is a genuine OEM component designed for WRS5200DFPU ride-on roller screeds and DLW400ES series diesel light welders. As a direct Multiquip OEM part, it is manufactured to the exact specifications required for proper engine temperature regulation in these machines. Sourced and sold by DHS Equipment, this assembly is the correct replacement when your original thermostat has failed or is no longer maintaining proper operating temperature. Confirm fitment against your model code — WRS5200DFPU and DLW400ES, DLW400ESA, and DLW400ESA1 — before ordering.

Key Features

• Genuine OEM Temperature Calibration — Manufactured to the precise opening temperature and flow rate required by your engine, ensuring the cooling system responds correctly under load rather than opening too early or too late.
• Drop-In Assembly Format — Supplied as a complete thermostat assembly, so it installs directly into the existing housing without sourcing individual sub-components separately.
• Broad Series Fitment — Compatible with WRS5200DFPU ride-on roller screeds and DLW400ES, DLW400ESA, and DLW400ESA1 diesel light welders, covering multiple units in these product families.
• Protects Engine from Thermal Stress — A correctly functioning thermostat keeps the engine within its optimal temperature band, preventing overheating damage and avoiding the fuel inefficiency and wear caused by running chronically under-temperature.
• Fuel System Safety Relevance — On diesel-powered equipment, maintaining correct coolant temperature directly affects combustion efficiency and emissions compliance; a failed thermostat can trigger thermal runaway or incomplete combustion under sustained operation.

The thermostat assembly controls coolant flow between the engine and the radiator, holding coolant within the engine block until it reaches the correct operating temperature, then opening to allow circulation through the cooling system. This regulation keeps the engine running in its designed thermal window — critical for both performance and longevity. When the thermostat fails, the engine may overheat due to a stuck-closed thermostat, or run cold and inefficiently due to a stuck-open one, both of which accelerate wear and can lead to costly engine damage.

Need help confirming this part fits your machine? Contact the DHS Equipment team for fitment support before ordering.

Part Details

Compatibility & Fitment

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.