Rex’s replacement CB250 CDi unit is applicable to Honda part numbers 30400-442-004. The Blue and white wires should have a two way connector and have a Nippon Denso number, either 070000-0420 or 070000- 0421. Fits models 1978-84, some markets may use this unit on later models, check your parts book!
Our unit has been fined tuned for the 250cc engine and gives excellent starting and crisp throttle response. Every CDi unit is tested before they are despatched – if problems remain (or change) the system has other faults.
- Improved design, simple to fit
- Great starting and crisp response
- Complete with mounting bracket
- Correct connectors – no set up
Note replacing the CDi unit alone may not cure running issues. Troubleshooting of capacitor discharge faults is generally poorly explained in OEM manuals. Rex’s publish a free trouble shooting guide that has much clearer information. Our specialists are on hand to test and repair the stator if this is required.