



FASS HK1003U Extreme Arctic / Ultimate Heater Kit — Up to 500W
Combined heater kit with a high-output disk, two heater probes and installation components. Delivers up to 500 watts on compatible FASS systems.
FASS HK1003U Extreme Arctic / Ultimate Heater Kit — Up to 500W
The Extreme Arctic heater kit, also known as the Ultimate kit, combines disk and probe heating for cold-weather fuel protection.
Product details
| Manufacturer part | HK1003U |
|---|---|
| Heating components | 1 high-output heater disk and 2 electric probes |
| Combined output | Up to 500 watts |
| Operation | Thermostatic; activates below 34°F and switches off at operating temperature |
Compatibility and installation
For compatible Titanium Signature Series and Titanium Series systems. Confirm disk compatibility; the HK1002 disk requires a Titanium Series system made after 2013.
The heater disk must be on the suction side. It is rated for vacuum only and must not be installed under pressure. Follow both component guides below.
Use the correct fuel for expected conditions; electric heating helps reduce gelling rather than replacing fuel selection and system maintenance.
View FASS manufacturer specifications.
Installation Instructions
Download the manufacturer’s component installation guides below. Read every part before installation.
- HK1001 heater-probe installation guide — pages 1–6 of 12 (PDF)
- HK1001 heater-probe installation guide — pages 7–12 of 12 (PDF)
- HK1002 heater-disk installation guide — pages 1–7 of 13 (PDF)
- HK1002 heater-disk installation guide — pages 8–13 of 13 (PDF)

