Starter Motor for Yamaha 40HP 50HP 2-Stroke 3-Cyl 6H4-81800-12 6H4-81800-11
PH130-0063Y
- Dispatched in 2-3 days
- 30 Day Return Policy
- In stock, ready to ship
- Backordered, shipping soon
Yamaha 40-50HP Starter Motor
Part Number: 6H4-81800-12 / 6H4-81800-11
Restore the reliable starting power of your Yamaha outboard with this high-performance starter motor. Specifically engineered for the 3-cylinder 40HP and 50HP 2-stroke series, this unit provides the high torque necessary for quick ignition in demanding marine environments. Manufactured with corrosion-resistant materials, it serves as a robust replacement for ageing or failed original units.
Key Features
- β Direct fit replacement for easy installation
- β Marine-grade components for salt/freshwater use
- β Heavy-duty internal magnets for high torque
- β Precision-aligned 9-tooth pinion gear
Technical Specs
| Voltage | 12 Volts |
| Rotation | CCW (Counter-Clockwise) |
| Number of Teeth | 9 |
| Type | PMDD (Direct Drive) |
Compatibility / Fitment Guide
| Make/System | Model/Application | Notes |
|---|---|---|
| Yamaha Outboard | 40HP 3-Cylinder 2-Stroke | 1984 - 1988 (EL, ES, ET Models) |
| Yamaha Outboard | 50HP 3-Cylinder 2-Stroke | 1984 - 1988 (EL, ES, ET Models) |
| Yamaha Outboard | 40ETL / 50ETL | Standard 3-Cylinder block |
OEM Cross Reference
| Yamaha OEM | 6H4-81800-10, 6H4-81800-11, 6H4-81800-12 |
| Hitachi | S108-99, S108-99A, S108-99B |
| Sierra Marine | 18-6422 |
| API Marine | MOT5012 / MOT5012N |
| Lester | 18345 |
Questions & Answers
Is this a genuine original part?
This is a premium quality aftermarket replacement part, manufactured to meet or exceed original equipment (OE) standards for fitment and performance in marine environments.
How do I know if it is compatible?
We recommend checking your current part for the 6H4-81800 code. This starter is specifically for the 3-cylinder models; if you have a 2-cylinder model, please check our other listings for the 697-81800 variant.
Does it come with the drive gear attached?
Yes, this unit is a complete assembly including the 9-tooth drive gear, ready for bolt-on installation.
Note: At 4boats.co.uk, we recommend verifying your original part number against the cross-reference list provided before completing your purchase.
For the products under Β£150 the shipping is Β£6.99.
Free delivery for most items over Β£150.
