Starter motor for Mercury Mariner outboard 90-135HP, marine engine part from 4Boats

Starter motor for Mercury Mariner outboard 90-135HP, marine engine part from 4Boats UK

Starter motor for Mercury Mariner outboard 90-135HP, marine boat engine part 4Boats

Starter motor for Mercury Mariner outboard 90-135HP, marine engine part, 4Boats UK

Starter motor for Mercury Mariner outboard 90-135HP, marine part from 4Boats UK

Mercury Mariner outboard starter motor close-up, silver finish, three bolts, 4Boats UK

Starter motor for Mercury Mariner outboard, metal gear detail, 4Boats marine part

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 for Mercury Mariner 90-135HP

Name: Starter Motor for Mercury Mariner 90-135HP 2-Stroke Outboard 50-819968 18-5618
Price: 149.99 GBP
Rating: 5 (1 reviews)

Premium Replacement Part: 50-819968

This precision-engineered starter motor is a direct-fit replacement designed for Mercury Mariner 2-stroke outboards and Sport Jet applications. Manufactured to meet or exceed original equipment standards, it provides the high torque necessary for reliable cold starts in demanding marine environments.

RELIABILITY: Built with high-quality magnets and moisture-resistant seals to ensure long-lasting performance on the water.

Key Features

✔ Direct fit for 50-819968 series
✔ Marine-grade corrosion protection
✔ SAE J1171 Ignition Protected
✔ 9-Tooth pinion gear for smooth engagement

Technical Specs

Voltage	12V
Rotation	CCW
Teeth	9
Starter Type	PMDD
Weight	Approx. 3.2kg

Compatibility / Fitment Guide

Make/System	Model/Application	Notes
Mercury / Mariner	90, 100, 115, 125, 135 HP	2-Stroke Outboards
Mercury Sport Jet	90, 95XR, 120, 120XR, 120XR2	Years 1993-2000
Force Outboards	75, 90, 120 HP	Years 1998-1999

OEM Cross Reference

Mercury Marine	50-819968, 50-819968-1, 50-819968-2, 50-819968-3, 50-819968-4, 50-819968T4, 50-853869T
Sierra Marine	18-5618
Arco Marine	7325
Cargo / Lester	112146 / 5734
United Technologies	SM56676, SM67132, 5667640-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, it is a guaranteed fit.

Does this starter include the mounting bolts?

This unit is supplied as the starter motor assembly. While it typically uses standard 1/4-20 x 1.85" mounting bolts, we recommend reusing your original hardware for the most secure mounting bracket fitment.

Note: Please verify your engine's serial number and original part number against the references above before purchasing. Distributed by 4boats.co.uk.

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

Free delivery for most items over £150.

Why choose us

ITS ALL ABOUT THE QUALITY

We source the best products from the Top suppliers only. We’ve taken years of feedback and have doubled down on providing the best service.

TEAMWORK MAKES THE DREAMWORK

Our Suppliers and Partners are joining us in our commitment to challenge the way this industry operates. From product sourcing to fulfilling, they’re the best in the business.

Simple_Image_Play_Built_into_Routine_Cosmetics_TikTok_In-Feed_Ad_1080_x_1080_px_10 - 4Boats

YOU MATTER TO US.

All your orders are personally checked by a member of 4 BOATS and we make sure your orders are dispatched quickly so it arrives to your doorstep ASAP

Starter Motor for Mercury Mariner 90-135HP 2-Stroke Outboard 50-819968 18-5618