Starter Relay Solenoid for Honda TRX 300/400, C70, CB360/750, GL1000 and Kawasaki Models
Starter Relay Solenoid for Honda TRX 300/400, C70, CB360/750, GL1000 and Kawasaki Models
SKU:RM09003
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Starter Relay Solenoid for Honda CB and Kawasaki KZ
Honda CB 200 / 350 / 450 / 500 / 550, Kawasaki KZ 1000 - 1969-2007 - OEM replacement 35850-HM3-000 / 27010-1047 - Part number RM09003
This is a brand new 12 volt starter relay solenoid switch, supplied as a direct replacement for the original unit fitted to Honda CB and Kawasaki KZ machines. The starter relay is the heavy duty switch that sits between the battery and the starter motor. When you press the start button, only a small current travels through the button and the handlebar wiring; that current energises the coil inside the relay, which closes a set of large internal contacts and lets the full starting current pass through to the motor. Without it, the thin switch wiring would have to carry a load it was never designed for.
Because those internal contacts carry hundreds of amps every time the engine is started, they are a wear item - they pit, they burn and eventually they stop making a reliable connection. That is why an old machine develops the familiar single loud click with no crank. This replacement is built to a standard that exceeds the original equipment, and every unit is tested before it is shipped. It measures 47 mm long by 33 mm wide by 33 mm high, with two wires of 350 mm length, two terminals and two plugs, so it mounts in the original position using the standard rubber holder.
Key Features
- Brand new 12 volt starter relay solenoid switch
- Direct replacement for the original unit - no modification required
- Quality exceeds the original equipment standard
- Two heavy duty terminals for the battery and starter motor cables
- 350 mm wire length for the trigger circuit
- Replaces thirteen original Honda and Kawasaki part numbers
- All products shipped are tested
Technical Specs
| Specification | Detail |
|---|---|
| Part number | RM09003 |
| Type | Starter relay solenoid switch |
| Voltage | 12 V |
| Height | 33 mm |
| Length | 47 mm |
| Width | 33 mm |
| Wire length | 350 mm |
| Number of wires | 2 |
| Number of terminals | 2 |
| Number of plugs | 2 |
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 |
|---|---|
| Honda CB 200 | 1969-2007 |
| Honda CB 350 | 1969-2007 |
| Honda CB 450 | 1969-2007 |
| Honda CB 500 | 1969-2007 |
| Honda CB 550 | 1969-2007 |
| Kawasaki KZ 1000 | 1969-2007 |
OEM Part Number Cross Reference
Aftermarket replacement. OEM part numbers are listed for reference only.
| Part Number | Manufacturer / Brand |
|---|---|
| 35850-179-711 | Honda |
| 35850-286-027 | Honda |
| 35850-306-007 | Honda |
| 35850-306-670 | Honda |
| 35850-371-670 | Honda |
| 35850-375-000 | Honda |
| 35850-431-007 | Honda |
| 35850-HA7-670 | Honda |
| 35850-HA7-771 | Honda |
| 35850-HM3-000 | Honda |
| 35850-HM8-000 | Honda |
| 27010-1023 | Kawasaki |
| 27010-1047 | Kawasaki |
Frequently Asked Questions
Will this fit without modification?
Yes. It is a direct replacement for the original solenoid, matching the original dimensions of 47 mm by 33 mm by 33 mm with two terminals, two plugs and 350 mm wires, so it sits in the standard mounting position and connects to the existing cables. Check the number on your original unit against the cross reference table before ordering.
What is included?
The starter relay solenoid switch itself, with its wires and terminals. Mounting rubbers, cables and terminal nuts from your original installation are reused. If the terminal posts on the old unit are heavily corroded, it is worth cleaning the cable eyes at the same time so the new solenoid starts with a clean, low resistance connection.
How do I know the old solenoid has failed?
The classic symptom is a single loud click from the solenoid when the start button is pressed, with the starter motor not turning, on a battery that is known to be good. Others include a starter that engages only occasionally, one that keeps running after the button is released because the contacts have welded together, or complete silence with full battery voltage present at the solenoid input terminal. Burnt or pitted terminals are a further sign.
Is a starter relay the same thing as a starter motor?
No. This part is the relay solenoid - the heavy duty switch that passes battery current through to the starter motor when the start button is pressed. The starter motor itself is a separate component. The two are often confused because a failed relay produces exactly the same symptom as a failed motor: the engine does not turn over.
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