The Arctic Fox F-203 In-Tank Fuel & Fluid Warmer provides a simple, durable solution for heating fuel and other fluids in cold-weather applications.
Installed directly inside the tank, the F-203 uses warm engine coolant to transfer heat to the surrounding fuel or fluid. This helps prevent cold-temperature problems such as fuel gelling and fluid thickening.
The F-203 is designed for flat tanks ranging from 14 to 29 inches deep and uses a 5/8-inch hose barb coolant connection. This version does not include a fuel standpipe.
Its in-tank design makes the F-203 well suited for heavy-duty vehicles and equipment that must operate reliably in low-temperature environments.
Key Features
- Arctic Fox in-tank fuel and fluid warmer
- Coolant-powered heating
- Designed for flat tanks
- Fits tank depths from 14 to 29 inches
- 5/8-inch hose barb coolant connection
- No fuel standpipe
- Helps reduce fuel gelling in cold conditions
- Helps prevent fluid thickening
- Stainless steel heater design
- Designed for demanding cold-weather operation
- Made in the USA
Applications
- Heavy-duty trucks
- Diesel fuel tanks
- Commercial vehicles
- Off-highway equipment
- Cold-weather equipment
- Fuel and fluid tanks
Specifications
Manufacturer: Arctic Fox
Part Number: F-203
Product Type: In-Tank Fuel & Fluid Warmer
Heat Source: Engine Coolant
Tank Type: Flat
Tank Depth: 14–29 in. (356–737 mm)
Coolant Connection: 5/8 in. Hose Barb
Fuel Standpipe: No
Installation: In-Tank
Country of Origin: United States
Benefits
- Helps maintain fuel and fluid temperature
- Helps reduce diesel fuel gelling
- Helps prevent fluid thickening in cold temperatures
- Utilizes heat from the engine coolant system
- Provides direct in-tank heating
- Designed for a wide range of tank depths

Reviews
There are no reviews yet.