Brand new starter relay solenoid switch for Arctic Cat snowmobiles, supplied as a direct replacement for your original unit. The solenoid is the heavy duty switch that connects the battery to the starter motor. The start button only carries a small control current, which energises a coil inside the solenoid and pulls the main contacts together so the full cranking current can flow.
On a snowmobile that job is demanding, because cold cranking draws high current and moisture around the terminals accelerates contact wear. The quality of this RMSTATOR unit exceeds the OEM equipment and all products shipped are tested. It is a four terminal design with a 56 mm distance between the fixation holes, so it lines up with the original mounting points. All item pictures are accurate, so if in doubt do not hesitate to compare our item to your original part.
Key Features
- Brand new starter relay solenoid switch
- Direct replacement to your original unit
- Quality exceeds the OEM equipment
- All products shipped are tested
- 4 terminal design
- 56 mm distance between fixation holes
- Replaces Arctic Cat OEM 0645-673
- Covers Bearcat, Lynx, M, XF and ZR models 2013-2023
Technical Specs
| Specification |
Detail |
| Part number |
RMS090-106645 |
| Type |
Starter relay solenoid switch |
| Height |
61 mm |
| Length |
48 mm |
| Width |
76 mm |
| Distance between fixation holes |
56 mm |
| Number of terminals |
4 |
Vehicle Fitment Guide
Years shown are the overall coverage span for this part. Please confirm against the OEM part number on your original unit before ordering.
| Make & Model |
Years |
| Arctic Cat Bearcat 570 |
2013-2023 |
| Arctic Cat Lynx 2000 |
2013-2023 |
| Arctic Cat M 6000 |
2013-2023 |
| Arctic Cat M 8000 |
2013-2023 |
| Arctic Cat XF 6000 |
2013-2023 |
| Arctic Cat XF 8000 |
2013-2023 |
| Arctic Cat ZR 6000 |
2013-2023 |
| Arctic Cat ZR 8000 |
2013-2023 |
OEM Part Number Cross Reference
Aftermarket replacement. OEM part numbers are listed for reference only.
| Part Number |
Manufacturer / Brand |
| 0645-673 |
Arctic Cat |
Frequently Asked Questions
Does it fit without modification?
Yes. It is a direct replacement to your original unit, with four terminals and 56 mm between the fixation holes so it uses the existing mounting points. Confirm that your original solenoid carries Arctic Cat part number 0645-673 before ordering.
What do I receive?
One brand new starter relay solenoid switch, part number RMS090-106645, tested before dispatch.
How do I know the old solenoid has failed?
A single click with no cranking, cranking that works only intermittently, or a starter turning slowly on a fully charged battery are the usual signs. Cold weather makes a marginal solenoid worse, because the higher cranking current has to pass through contacts that are already pitted.
How do I check the mounting before ordering?
Measure the distance between the two mounting holes on your original unit. This solenoid is built with 56 mm between fixation holes and an overall body of 61 mm by 48 mm by 76 mm, so comparing those figures against the part you are removing is a quick way to confirm the fit.
Dispatched from the UK · 12-month warranty · Fitment support from our technical team
