5013920A – Webasto Thermo Top EVO 12V Diesel Coolant Heater Kit with SmarTemp 3.0 Bluetooth

Cold weather increases engine wear and extends warm-up times. The Webasto Thermo Top EVO addresses this by heating the engine coolant before startup. As a result, engines start more reliably, warm faster, and provide cabin heat sooner through the vehicle’s heater core.

This 12V diesel coolant heater delivers up to 17,000 BTU (5 kW) of heating output. Because it integrates directly into the coolant loop, heat is distributed through the engine block and HVAC system without running the engine.

The included SmarTemp 3.0 Bluetooth controller allows users to manage timers, presets, and heater status wirelessly. This makes the Thermo Top EVO a strong solution for fleets and commercial operators seeking reduced idling, lower fuel consumption, and improved cold-weather performance.

Key Features & Benefits

• Provides engine preheat for dependable cold starts and reduced wear

• Supplies cabin heat through the heater core for faster defrost and defog

• Reduces idling to support fuel savings and emissions compliance

• Compact, lightweight design simplifies installation on 12V vehicles

• SmarTemp 3.0 Bluetooth control for scheduling and monitoring

What’s Included

This diesel coolant heater kit includes:

• Webasto Thermo Top EVO heater

• SmarTemp 3.0 Bluetooth controller

• Wiring harness

• Fuel line (5 m / 16.4 ft)

• Mounting bracket and installation hardware

• Coolant circulation pump

• Fuel pump and fuel filter with connections

• Fuel standpipe

• Stainless-steel exhaust hose (1 m / 3.28 ft)

• Combustion air intake hose (0.4 m / 1.31 ft)

Technical Specifications

Heater Model: Thermo Top EVO
Part Number: 5013920A
Voltage: 12V
Fuel Type: Diesel
Heating Medium: Engine coolant (hydronic)
Maximum Heat Output: 5.0 kW (17,000 BTU)
Fuel Consumption: 0.08 – 0.13 gal/hr (0.31 – 0.49 L/hr)
Coolant Pump Flow Rate: Approx. 45 L/hr
Maximum Operating Altitude: 5,000 ft (1,500 m)
Dimensions (heater body only): 218 × 91 × 147 mm
Weight: 4.8 lb (2.2 kg)
Certifications: ECE R122 (heating), ECE R10 (EMC)
Warranty: 2 years

Vehicle Compatibility

• Commercial and light-/medium-duty vehicles

• Trucks

• Municipal vehicles

• Cargo vehicles

• School buses and shuttle buses

• Off-highway equipment

• Ground support equipment

• Fire and rescue vehicles

Installation Notes

• Designed for 12V diesel systems only

• Installs into the engine coolant loop

• Supports cabin heating via the vehicle heater core

• Professional installation is recommended

Operating Guide

Install Guide

Install Guide