A Mule is built to work, and on a lot of farms it works hardest in winter. The Firestorm HT_CU_439 is made for the 2016-2026 Kawasaki Mule FX 820 and 1000, using engine coolant to make up to 18,000 BTU in the cab. Two defrost vents keep the windshield clear for early chores, and the driver and passenger each get a vent.
Mule Highlights
- Fits 2016-2026 Kawasaki Mule FX 820 and FX 1000 models as listed by Moto Alliance.
- Up to 18,000 BTU with temperature and fan-speed control.
- Windshield defrost on two vents, and swiveling cab vents for the bench.
- Hidden core install with Mule-specific brackets.
Work Machine Tips
- Let the engine warm up before turning the fan to high.
- Clear the glass with defrost before you head to the barn.
- Shut the valve for summer haying and fieldwork.
Firestorm Heater Specifications
- Heat output: up to 18,000 BTU from the engine coolant, with airflow from 0 to 125 CFM
- Adjustable temperature and fan speed, with 360-degree adjustable vents
- Dedicated driver and passenger vents, plus two defrost vents aimed at the windshield
- Built-in shutoff valve to close off coolant flow in warm weather
- Automotive-grade radiator hose rated from -40 to 120 degrees C
- High-performance alloy radiator Y connectors
- No visible heater core, for a factory-installed look
Fitment
| Year | Make | Model |
|---|---|---|
| 2016-2026 | Kawasaki | Mule FX 820 |
| 2016-2026 | Kawasaki | Mule FX 1000 |
Note: Moto Alliance lists this kit for the "Mule FX 820/1000". Confirm your Mule model with us if you are not sure.
What's in the Box
- Firestorm heater unit with fan, temperature and fan-speed controls
- Driver, passenger and two defrost vents
- Brackets and hose lengths made for the Kawasaki Mule
- Automotive-grade radiator hose and alloy radiator Y connectors
- Built-in coolant shutoff valve
- All installation hardware and instructions
Who It's For and What Pairs Well
This heater is for Mule owners feeding livestock, plowing or running fence lines in the cold. Pair it with a Mule windshield, roof and doors, and add a Mule snow plow.
Installation Notes
Mount the heater with the included Mule brackets and connect it to the coolant system with the supplied hose and alloy Y connectors. Refill and bleed the coolant per the Moto Alliance PDF and check clamps after the first few heat cycles.
- source:
- motoalliance
- ma_url:
- https://www.motoalliance.com/firestorm-cab-heater-mule
- desc_status:
- written_2026-10-28
- ma_parts:
- HT_CU_439 $399.99
