4Boats
Starter Motor for Mercury Mariner 8 9.9 15 HP 4-Stroke 2-Cyl 50-859168T 18-6829
Starter Motor for Mercury Mariner 8 9.9 15 HP 4-Stroke 2-Cyl 50-859168T 18-6829
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Starter Motor 50-859168T
Premium Quality Aftermarket Outboard Component
This high-torque replacement starter motor is specifically engineered for Mercury and Mariner 4-stroke outboards (2-cylinder, 323cc models). Built with heavy-duty internal components and marine-grade corrosion protection, it is designed to provide reliable starting performance in harsh saltwater and freshwater environments.
Key Features
- ✔ Direct fit replacement for OEM 50-859168T
- ✔ Marine-grade moisture-sealed housing
- ✔ PMDD high-torque design
- ✔ 9-Tooth drive gear for precision engagement
Technical Specs
| Voltage | 12V |
| Rotation | CCW |
| Teeth | 9 Teeth |
| Type | PMDD |
| Weight | ~3.0 kg |
Compatibility / Fitment Guide
| Engine HP | Model Type | Years |
|---|---|---|
| 8 HP | Bodensee 4-Stroke | 1999 - 2004 |
| 9.9 HP | 4-Stroke (323cc) | 1999 - 2008 |
| 13.5 HP | 4-Stroke (International) | All |
| 15 HP | 4-Stroke (323cc) | 1999 - 2008 |
OEM Cross Reference
| Mercury / Quicksilver | 50-859168T, 50-859168, 50-852570T, 50-852570, 50-857065 |
| Sierra Marine | 18-6829 |
| Arco Marine | 5359 |
| Other References | WAI 5763N, J&N 410-21043, API MOT3022N |
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.
How do I know if it is compatible?
Check your engine's serial number and original starter part number. This motor specifically fits the 4-stroke 2-cylinder (323cc) Mercury engines; if you have the 2-stroke model, please verify the cross-reference list carefully.
What happens if my starter has 10 teeth?
This unit features 9 teeth, which is correct for the 50-859168T part number series. If your original starter has 10 teeth, you likely require the 50-859170T variant instead.
Note: Please verify your original part number against the references above at 4Boats before purchasing.
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