Main Starter Relay for Kawasaki Jet Ski - RMS090-102089
STX-12F, STX-15F, Ultra 250, 260, 300, 310 R X LX | 2007-2024 | OEM 27002-3703
Brand new main starter relay for Kawasaki Jet Ski personal watercraft. On these models the main relay is a multi-circuit unit rather than a simple two terminal solenoid, which is why it carries eight wires and eight terminals in a single plug. It handles the starting circuit and the associated switched feeds, so when it fails the symptoms can range from a dead start button to electrical accessories that behave erratically.
This RMSTATOR replacement is built to a quality that exceeds the OEM equipment and all products shipped are tested before dispatch. The compact body measures 37 mm high by 30 mm long by 23 mm wide with 185 mm wires, so it fits the standard mounting position and reconnects through the original loom plug. All item pictures are accurate, so if in doubt do not hesitate to compare our item to your original part.
Key Features
- Brand new main starter relay
- Quality exceeds the OEM equipment
- All products shipped are tested
- 8 wire, 8 terminal, single plug configuration
- 185 mm wires for direct loom connection
- Compact 37 mm tall body
- Replaces Kawasaki OEM 27002-3702 and 27002-3703
- Covers STX and Ultra models from 2007 to 2024
Technical Specs
| Specification |
Detail |
| Part number |
RMS090-102089 |
| Type |
Main starter relay |
| Height |
37 mm |
| Length |
30 mm |
| Width |
23 mm |
| Wires length |
185 mm |
| Number of wires |
8 |
| Number of terminals |
8 |
| Number of plugs |
1 |
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 |
| Kawasaki Jet Ski STX-12F |
2007-2024 |
| Kawasaki Jet Ski STX-15F |
2007-2024 |
| Kawasaki Jet Ski Ultra 250 R / X / LX |
2007-2024 |
| Kawasaki Jet Ski Ultra 260 R / X / LX |
2007-2024 |
| Kawasaki Jet Ski Ultra 300 R / X / LX |
2007-2024 |
| Kawasaki Jet Ski Ultra 310 R / X / LX |
2007-2024 |
OEM Part Number Cross Reference
Aftermarket replacement. OEM part numbers are listed for reference only.
| Part Number |
Manufacturer / Brand |
| 27002-3702 |
Kawasaki |
| 27002-3703 |
Kawasaki |
Frequently Asked Questions
Does it fit without modification?
Yes. It is a direct replacement that uses the original 8 wire, single plug connection, so there is no cutting or splicing. Confirm that your original relay carries Kawasaki part number 27002-3702 or 27002-3703 before ordering.
What is included?
One brand new main starter relay, part number RMS090-102089, with its 185 mm wire harness and plug already fitted. Every unit is tested before it is shipped.
How do I know the old relay has failed?
No response at all from the start button, a single click without cranking, or intermittent starting that comes and goes with vibration are the usual signs. Because this is a multi-circuit main relay, a failure can also show up as switched circuits dropping out while the engine is running.
Why does this relay have eight wires?
Unlike a simple starter solenoid with two heavy terminals, the Kawasaki main relay handles several circuits within one housing. The eight wires and eight terminals feed through a single loom plug, which keeps the installation tidy and means the unit only fits one way round.
Dispatched from the UK · 12-month warranty · Fitment support from our technical team
