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Starter Motor for Mercury Mariner 40 50 HP 4-Stroke Outboard 50-834749 50-859171T

Starter Motor for Mercury Mariner 40 50 HP 4-Stroke Outboard 50-834749 50-859171T

£169.00 GBP
£169.00 GBP
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Starter Motor 50-834749

For Mercury & Mariner 40-50 HP 4-Stroke Outboards

This premium replacement starter motor is engineered specifically for Mercury and Mariner 40HP and 50HP 4-stroke outboard engines. Designed to provide reliable cranking power in harsh marine environments, this unit is a direct bolt-on replacement for the original factory starter.

RELIABILITY: Manufactured to meet or exceed OEM specifications, featuring high-quality seals and corrosion-resistant components for long-lasting performance on the water.

Key Features

  • ✔ Precision 9-Tooth drive gear
  • ✔ 12V High-torque PMDD design
  • ✔ Direct fit for select 4-stroke models
  • ✔ Corrosion-resistant field housing

Technical Specs

Voltage: 12V
Rotation: CCW (Counter Clockwise)
Teeth: 9-Tooth
Gear OD: 28.5mm
Type: PMDD

Compatibility / Fitment Guide

Make/System Model/Application Years
Mercury / Mariner 40HP 4-Stroke (All Models) 1997 - Up
Mercury / Mariner 50HP 4-Stroke (50EL, 50ELPT, 50ELHPT) 1995 - 2000
Mercury / Mariner 50HP 4-Stroke BigFoot (B/F) 1998 - 2000
Mercury / Mariner 45HP 4-Stroke Outboards 1997 - 2001

OEM Cross Reference

Mercury Marine 50-834749, 50-859171T, 50-825095, 50-893886T, 50-898265001
United Technologies 6743240-M030SM, SM67432, 6743240
Johnson Electric 10153540
Arco Marine 5362
Other References MOT3018N, RS41055, 113591

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?

We recommend checking your original starter for the part number 50-834749 or 50-859171T. If your part matches these or any other number in our cross-reference list, it is a guaranteed fit.

What if my starter has 10 teeth instead of 9?

This specific model (50-834749) uses a 9-tooth gear. Some other Mercury 40-50HP starters use a 10-tooth gear (like SKU 50-73521). Please verify the teeth count on your original unit before ordering to ensure correct engagement with the flywheel.

Note: Please verify your original part number and teeth count against the references above before purchasing. Distributed by 4boats.co.uk.

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