Mercury Mariner outboard starter motor for boat engines, black metal part on white background
Black starter motor for Mercury Mariner 2-stroke outboard, marine engine part from 4Boats UK
Black starter motor for Mercury Mariner outboard, marine engine part from 4Boats UK
Starter motor for Mercury Mariner 2-stroke outboard, black housing, 4Boats marine part
Mercury Mariner 2-stroke outboard starter motor, marine engine part, black, for 4Boats UK
Mercury Mariner outboard starter motor for boat engines, black casing, 4Boats marine part
Black Mercury Mariner 2-stroke starter motor, marine engine part from 4Boats UK
Starter motor for Mercury Mariner outboard, marine engine part from 4Boats UK
Black marine starter motor for Mercury Mariner outboards, shown close-up on white background.
Mercury Mariner outboard starter motor for boat engines, black metal part on white background
Black starter motor for Mercury Mariner 2-stroke outboard, marine engine part from 4Boats UK
Black starter motor for Mercury Mariner outboard, marine engine part from 4Boats UK
Starter motor for Mercury Mariner 2-stroke outboard, black housing, 4Boats marine part
Mercury Mariner 2-stroke outboard starter motor, marine engine part, black, for 4Boats UK
Mercury Mariner outboard starter motor for boat engines, black casing, 4Boats marine part
Black Mercury Mariner 2-stroke starter motor, marine engine part from 4Boats UK
Starter motor for Mercury Mariner outboard, marine engine part from 4Boats UK
Black marine starter motor for Mercury Mariner outboards, shown close-up on white background.

Starter Motor for Mercury Mariner 6-25HP 2-Stroke 50-90983A1 50-893889T 18-5611

5724N

  • 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.
£149.99
/
Tax included.

Starter Motor 50-90983A1

For Mercury & Mariner 6-25HP 2-Stroke Outboards

This premium aftermarket starter motor is a precision-engineered replacement for Mercury and Mariner 2-stroke outboard engines ranging from 6HP to 25HP. Built to withstand the harsh marine environment, it provides reliable cranking power and consistent performance for your vessel.

RELIABILITY: Manufactured to PMDD (Permanent Magnet Direct Drive) standards to meet or exceed original equipment performance.

Key Features

  • ✔ Direct fit for 2-stroke small outboards
  • ✔ 10-Tooth drive gear for secure engagement
  • ✔ Corrosion-resistant finish
  • ✔ PMDD Type motor for efficient starting

Technical Specs

Voltage: 12V
Rotation: CCW (Counter-Clockwise)
Teeth: 10
Mounting: 2-Bolt (1 Oblong)
Weight: 1.67 kg (Approx)

Compatibility / Fitment Guide

Horsepower Engine Range Years
6 - 15 HP 2-Stroke Models 1986 - 2005
18 - 25 HP 2-Stroke Models 1980 - 2005
Specific Models 15EH, 15EL, 20E, 20EL, 25E Check SN/PN

OEM Cross Reference

Mercury Marine: 50-90983A1, 50-90983T1, 50-893889T, 8M0033984
Sierra Marine: 18-5611, 18-5639
Arco Marine: 5367
Other References: Lester 5724, MOT3000, 5216040

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, it is a guaranteed fit.

Will this fit my 4-stroke Mercury engine?

No, this specific starter is designed for the 2-stroke outboard engine range (6-25HP). 4-stroke models typically use different mounting patterns and drive gears.

Note: Please verify your original part number against the references above before purchasing. For any queries, please visit 4boats.co.uk.

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

Free delivery for most items over £150.

This site is protected by hCaptcha and the hCaptcha Privacy Policy and Terms of Service apply.

You may also like

Recently viewed

Why choose us

Untitled_1080_x_1080_px_1 - 4Boats

QUALITY MARINE PARTS

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

Untitled_1080_x_1080_px_2 - 4Boats

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.