Name: Starter Motor for Mercury Mariner 40-100HP 2-Stroke 50-65436 18-5642 5375 10T
Brand: waiglobal
SKU: 5708N
Price: 124.99 GBP
Availability: InStock

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

Dispatched in 2-3 days

30 Day Return Policy

In stock, ready to ship
Backordered, shipping soon

Our stock levels are dynamic and can change frequently. If a product appears to be in stock, it may have already sold out. Please contact us if you have any questions about availability. Thank you for your understanding.

£124.99

Tax included.

Starter Motor 50-65436

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.

Why choose us

QUALITY MARINE PARTS

We source dependable marine products from established suppliers and continually refine our range using customer feedback.

TRUSTED SUPPLIERS

We work with trusted marine suppliers and distribution partners to provide reliable parts, equipment and fulfilment.

Simple_Image_Play_Built_into_Routine_Cosmetics_TikTok_In-Feed_Ad_1080_x_1080_px_10 - 4Boats

PERSONAL SERVICE

Every order is checked by the 4Boats team. Contact us before ordering if you need help with part numbers, compatibility or availability.

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