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 from 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
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 from 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

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

5734N

  • 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

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.

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