Webasto Thermo Pro 50 Diesel 24 V Heavy Duty Off Highway Heater Kit

Heavy-Duty Diesel Coolant Heating for Off-Highway Equipment

Built for extreme conditions, this Webasto 24V diesel coolant heater delivers dependable engine preheating and cab comfort while reducing cold-start wear. With up to 17,000 BTU (5 kW) of output and low electrical draw, it keeps equipment productive in harsh, remote environments.

Benefits & Use Cases

Designed for demanding off-highway applications, this coolant heater improves cold-weather reliability while minimizing idle time. By warming engine coolant before startup, it supports easier starts, reduced emissions, and improved operator comfort.

• Fast engine preheating to reduce cold-start wear and emissions
• Improves cab comfort without extended engine idling
• Efficient diesel operation with low fuel and power consumption
• Built for rugged use in construction, agricultural, and specialty vehicles

Vehicle Compatibility

• Light-duty vehicles with 24V electrical systems
• Heavy-duty trucks and vocational equipment
• Construction and earthmoving machinery
• Agricultural equipment and specialty vehicles

Technical Specifications

• Fuel Type: Diesel
• Voltage: 24V
• Max Heat Output: 17,000 BTU (5.0 kW)
• Fuel Consumption: 0.08–1.17 gal/h (0.3–0.65 L/h)
• Power Consumption: 35–50 W
• Max Altitude: 9,900 ft (3,000 m)
• Coolant Pump Flow Rate: 132 gal/h (500 L/h)
• Warranty: 2 Years
• Dimensions (Heater body only): 4.3 × 1.9 × 3.1 in (109 × 49 × 79 mm)
• Weight (Heater only): 4.85 lb (2.2 kg)

Part numbers:

• Complete kit: 5010870B
• Heater only: 9045298B
• Alternative formats: 5010870

Browse Webasto Manuals & Technical Documentation

Kit Includes

• Webasto Thermo Pro 50 Heater
• DP42 Fuel Pump
• Wiring Harness
• Standpipe and Fuel Line
• Exhaust Tube
• Stainless Steel Combustion
• Air Intake Tube
• Stainless Steel Heater Bracket
• Constant Torque Coolant Hose
• Clamps
• Coolant Hose Reducers & Y Pipes
• Metal P & Rubber Hose Clamps
• Installation Materials
• Toggle Switch
• Muffler

FAQs

What is this heater mainly used for?
It is designed for engine preheating and cab comfort in off-highway and heavy-duty vehicles operating in cold conditions.

How does a coolant heater help reduce engine wear?
Preheating engine coolant reduces cold-start friction, improves combustion efficiency, and lowers emissions during startup.

Can this heater be installed by a professional technician?
Yes, this kit is designed for professional or fleet installation using standard coolant and fuel system connections.

Does it work in high-altitude environments?
The heater is rated for use up to 9,900 ft, making it suitable for mountainous and remote job sites.

Need help confirming compatibility or installation requirements? Talk to a Heatso expert