Original WL340A10-200 | Engine Heater
- WL Engine Heater – Weather-Tight Coolant preheater
- Heating Fluid: Engine Coolant, Water, other
- No pump needed (thermosiphon principle)
- Volts: 240v – 208v – 240v – 400v – 480v – 575v
- kW: 2.5 – 4 – 5 | 60Hz – Three Phase
- Primary Temperature Control: 100–120 °F (38–49 °C)
- Primary High Limit Temperature: 205°F (96°C)
- UL-C / US listed | CE-compliant models available
- Pre-Heat: Diesel and Gas engines, construction equipment, trucks, marine and industrial applications
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$999.99
HOTSTART’s WL series heaters deliver reliable three-phase engine heating for original equipment manufacturer (OEM) applications. Built with a durable pressure die-cast aluminum tank, the WL series includes a built-in high-limit thermostat and offers an optional flow-through thermostat for precise temperature control. An all-metal mounting bracket and heating power up to 5 kW make these coolant heaters ideal for heavy-duty, large diesel and gas engines.
The WL series mounts externally to the engine block and uses the thermosiphon principle, allowing heated coolant to circulate naturally through convection without the need for a mechanical pump. This flexible design supports easy installation across a wide range of engines without requiring specific water jacket connections, making WL heaters a dependable solution for diverse engine heating applications.
By preheating diesel and gas engines, WL heaters ensure fast starts, rapid load acceptance, and reduced wear on critical engine components. Industries that depend on continuous engine performance—such as fleet operations, mining, excavation, data centers, and hospitals—rely on HOTSTART WL heaters to reduce downtime, improve reliability, and protect their equipment investment.
