Mercury Mariner outboard starter motor for 40-100HP, marine engine part at 4Boats UK

Starter motor for Mercury Mariner outboard, boat engine part, 4Boats UK marine accessory

Starter motor for Mercury Mariner outboard 40-100HP, marine engine part, 4Boats UK

Starter motor for Mercury Mariner outboard 40-100HP, black cylindrical marine part on white

Starter motor for Mercury Mariner outboard 40-100HP, marine engine part from 4Boats UK

Starter motor for Mercury Mariner outboard, 40-100HP, marine engine part at 4Boats

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£148.95

Tax included.

Starter Motor 50-65436

Name: Starter Motor for Mercury Mariner 40-100HP 2-Stroke 50-65436 18-5642 5375 10T
Price: 148.95 GBP
Rating: 5 (1 reviews)

Premium Replacement for Mercury & Mariner Outboards

Restore reliable ignition to your vessel with this high-torque replacement starter motor. Specifically designed for Mercury and Mariner 2-stroke outboards, this unit is built using premium internal components to withstand the rigorous demands of marine environments.

RELIABILITY: Engineered with a weather-sealed housing and high-grade copper windings to ensure consistent starting power even in saltwater conditions.

Key Features

✔ Direct fit replacement for easy installation
✔ 10-Tooth drive gear for precision engagement
✔ Corrosion-resistant finish for marine durability
✔ Meets or exceeds original OEM performance

Technical Specs

Voltage:	12V
Rotation:	CCW (Counter-Clockwise)
Teeth:	10 Teeth
Type:	PMDD
Housing Length:	5.075" (128.9mm)
Gear OD:	1.28" (32.5mm)

Compatibility / Fitment Guide

Make/System	Model/Application	Approx. Years
Mercury / Mariner	40HP, 45HP, 50HP (3 & 4 Cyl)	1972-1999
Mercury / Mariner	55HP, 60HP, 65HP	1973-1990
Mercury / Mariner	70HP, 75HP, 80HP	1977-1999
Mercury / Mariner	90HP, 100HP	1987-1999

OEM Cross Reference

Mercury Marine	50-65436, 50-57485, 50-60315, 50-66015, 50-88119, 50-893891T
Sierra Marine	18-5604, 18-5606, 18-5642
Arco Marine	5375
Mallory Marine	9-15002
United Tech	SM01446, SM09962, SM09964, 4820140-M030SM

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 the SKU/MPN and Cross Reference list provided above. If your original part number matches any of these (e.g., 50-65436), it is a guaranteed fit.

Does this unit include the solenoid?

This is a PMDD-style starter motor. On most compatible Mercury 2-stroke engines, the solenoid is an external component mounted on the engine bracket rather than integrated into the starter motor body itself.

Note: Please verify your original part number against the references above before purchasing. Part numbers are for reference only.

For the products under £150 the shipping is £6.99.

Free delivery for most items over £150.

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Starter Motor for Mercury Mariner 40-100HP 2-Stroke 50-65436 18-5642 5375 10T