CDI Unit ECU 688-85540-16-00 Fit for Yamaha 1988-1996 75 85 90 HP Outboard Motor
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Compatible Models
We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.
CDI Unit ECU for Yamaha
This CDI unit ECU is an ignition control module for Yamaha outboard motors, fits 1988-1996 75, 85, and 90 HP models, and replaces OEM part number 688-85540-16-00.
Overview
The CDI unit ECU manages ignition timing and spark for Yamaha outboards. This CDI unit ECU ensures reliable starting and smooth power delivery across the RPM range. Designed for Yamaha 75-90 HP motors from 1988-1996, this CDI unit ECU is a direct replacement component.
Built For Performance
- Solid-state ignition circuitry
- Sealed against moisture and vibration
- Precisely matched to original Yamaha specifications
- Plug-and-play installation with OEM connectors
- Enhances fuel efficiency and throttle response
- Built to withstand harsh marine environments
Fits These Machines
- for Yamaha 75HP (1988-1996)
- for Yamaha 85HP (1988-1996)
- for Yamaha 90HP (1988-1996)
On-The-Job Use
- Replaces a faulty ignition unit to restore engine performance
- Used in saltwater and freshwater outboard applications
- Ensures consistent starting in cold or hot conditions
- Helps prevent misfires and rough idle
- Supports high-rpm operation for planing and cruising
Specs At A Glance
| Part Number(s) | 688-85540-16-00 |
Good To Know
Q: Will this CDI unit work with my 1988 Yamaha 90HP? A: Yes, it's designed for 1988-1996 75-90HP Yamaha outboards, but confirm your engine serial number.
Q: What does this CDI unit do? A: It controls the ignition spark timing, ensuring proper combustion and engine performance.
Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.