Starter Motor for Mercury Mariner 40 50 60 HP 2-Stroke 50-73521 50-44369A1

Starter motor for Mercury Mariner outboard 40-50HP, 2-stroke, black marine part from 4Boats

Starter motor for Mercury Mariner outboard 40-50HP, marine engine part from 4Boats UK

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£140.00 £98.99 Save £41.01

Tax included.

Starter Motor 50-73521

Name: Starter Motor for Mercury Mariner 40 50 60 HP 2-Stroke 50-73521 50-44369A1
Price: 98.99 GBP
Rating: 5 (1 reviews)

For Mercury & Mariner 40-60 HP 2-Stroke Outboards

This premium quality replacement starter motor is engineered to provide reliable cranking power for Mercury and Mariner 2-stroke outboard engines. Designed for the harsh marine environment, it serves as a direct-fit replacement for the 3-cylinder 40HP, 50HP, and 60HP models typically manufactured between 1974 and 1994.

RELIABILITY: Precision-balanced and 100% load tested to meet or exceed original equipment (OE) standards for cold-cranking performance.

Key Features

✔ Direct fit for 3-cylinder models
✔ High-torque permanent magnet design
✔ Sealed housings to prevent corrosion
✔ 10-Tooth pinion for smooth engagement

Technical Specs

Voltage:	12V
Rotation:	CCW (Counter-Clockwise)
Teeth:	10 Teeth
Type:	PMDD
Field Housing:	~4.1 in. / 104.5mm

Compatibility / Fitment Guide

Engine Make	Horsepower / Model	Typical Years
Mercury / Mariner	40 HP (3-Cylinder)	1974 - 1994
Mercury / Mariner	50 HP (3-Cylinder)	1974 - 1994
Mercury / Mariner	60 HP (3-Cylinder)	1984 - 1994
Mercury / Mariner	70 HP (3-Cylinder)	1974 - 1985

OEM Cross Reference

Mercury Marine	50-73521, 50-73521T, 50-44369, 50-44369A1, 50-898265005
Sierra Marine	18-5605, 18-5606
Arco Marine	5379, 5388, 3424
United Technologies	4820240, 4820340, SM47764, SM48203, 996240

Questions & Answers

Is this a genuine original part?

This is a premium quality aftermarket replacement part, manufactured by specialists to meet or exceed original equipment (OE) standards for durability and performance.

How do I know if it is compatible?

Please check the cross-reference list above. If your original starter has part number 50-73521 or 50-44369 stamped on the housing, this unit is a guaranteed fit.

How many teeth are on the drive gear?

This starter features a 10-tooth pinion gear, specifically designed to mesh perfectly with the flywheel on compatible Mercury and Mariner 40-60HP outboards.

Note: At 4boats.co.uk, we recommend verifying your original part number against the references above before purchasing to ensure 100% fitment.

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 50 60 HP 2-Stroke 50-73521 50-44369A1