Starter for Mercury Marine 50-44369 50-44369A1 4820340 SM47764 SM48203 - 4Boats

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£98.99

Tax included.

Mercury Marine Starter Motor (50-73521)

Name: Starter Motor for Mercury Marine 40-60HP Outboard 50-73521 50-44369 SM47764
Price: 98.99 GBP
Rating: 5.0 (1 reviews)

Premium Quality Replacement for 40HP - 60HP Outboards

Restore reliable ignition to your Mercury or Mariner outboard with this heavy-duty 12-volt starter motor. Engineered to match the exact footprint and performance of the original United Technologies and Mercury Marine units, this starter ensures smooth, consistent cranking even in demanding marine environments.

RELIABILITY: Precision-manufactured PMDD (Permanent Magnet Direct Drive) design built to meet or exceed OEM specifications for long-lasting service life.

Key Features

✔ Direct fit for 4-Cylinder Mercury Outboards
✔ High-torque 10-tooth drive gear
✔ Marine-grade corrosion resistant finish
✔ Counter-Clockwise (CCW) Rotation

Technical Specs

Voltage:	12V
Rotation:	CCW
Teeth:	10-Tooth Pinion
Type:	PMDD
Gear OD:	32.1mm / 1.264in
Housing Length:	104.6mm / 4.118in

Compatibility / Fitment Guide

Application	Engine Details	Approx. Years
Mercury / Mariner 40HP	4-Cylinder, 2-Stroke	1989 - 1997
Mercury / Mariner 45HP	4-Cylinder, 2-Stroke	1986 - 1989
Mercury / Mariner 50HP	4-Cylinder, 2-Stroke	1976 - 1997
Mercury / Mariner 60HP	3 & 4-Cylinder Models	1984 - 1997

OEM Cross Reference

Mercury Marine	50-73521, 50-44369, 50-44369A1, 50-73521T, 898265005
United Technologies	4820340, SM47764, SM48203, 4820340-M030SM
Sierra Marine	18-5605, 18-5606
Arco Marine	5379, 5388
API Marine	MOT3007N, MOT3013

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 50-73521 or SM47764, this is the correct replacement.

Which rotation direction does this starter have?

This starter motor features a Counter-Clockwise (CCW) rotation, which is specific to the classic Mercury 4-cylinder outboard configurations listed.

Note: Please verify your original part number against the references above before purchasing. All 4Boats aftermarket components are tested for durability in marine conditions.

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

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Starter Motor for Mercury Marine 40-60HP Outboard 50-73521 50-44369 SM47764