

PROPELLER
Outboard CDI Ignition Unit Box for Yamaha 25HP / 30HP 2-Stroke 69P-85541-09
Eliminate misfires, hard starting, and loss of power with this high-performance CDI Ignition Box Assembly. Specifically engineered for Yamaha 25HP and 30HP 2-stroke outboard engines, this premium replacement CDI unit restores instant engine starting, precise spark timing, and optimal fuel combustion under all throttle conditions.
Outboard CDI Ignition Unit Box for Yamaha 25HP / 30HP 2-Stroke 69P-85541-09
Eliminate misfires, hard starting, and loss of power with this high-performance CDI Ignition Box Assembly. Specifically engineered for Yamaha 25HP and 30HP 2-stroke outboard engines, this premium replacement CDI unit restores instant engine starting, precise spark timing, and optimal fuel combustion under all throttle conditions.

Key Features & Highlights
- Direct OEM Plug & Play Fit: Precision-molded connectors match factory wiring harnesses directly—no cutting, splicing, or rewiring required.
- Optimized Spark Timing & Voltage: Delivers consistent, high-energy voltage to the spark plugs, improving engine responsiveness, idle stability, and overall fuel efficiency.
- 100% Sealed Marine Protection: Encapsulated in high-grade anti-vibration epoxy resin to seal out humidity, salt spray, water ingress, and engine vibration.
- Heavy-Duty Heat Dissipation: Built with temperature-resistant electronic components to prevent thermal breakdown during long running times at high RPMs.
Technical Specifications
Parameter | Specification |
OEM Reference Part Number | 69P-85541-09 / 69P-85541-00 / 69P-85541-01 / 69P-85541-02 |
Engine Compatibility | Yamaha Outboard Motors (2-Stroke) |
Engine Horsepower | 25 HP & 30 HP (E25 / E30 Series) |
Encapsulation Type | Fully Sealed Waterproof Epoxy Resin |
Condition | 100% Brand New Marine Aftermarket Replacement |
Package Includes | 1x CDI Ignition Unit Box |
Fitment & Engine Compatibility
Fits Yamaha 2-stroke 25HP and 30HP outboard engines (69P series), including:
- Yamaha 25HP / 30HP (E25B / E30H / 25B / 30B 2-Stroke)
- Compatible Outboard Brands: Parsun, Hidea, Powertec, Yamabisi 25HP/30HP 2-stroke engines based on Yamaha 69P architecture.
Troubleshooting Tip for Boat Owners
Common symptoms of a failing CDI unit include:
- No spark on one or more cylinders
- Engine bogs down or cuts out at higher RPMs
- Hard starting or failing to start when warm
- Intermittent ignition loss
Replacing a faulty CDI unit restores reliable ignition performance and gets your boat back on the water quickly.


