Yamaha Ignition Switch Key – Fits Yamaha 2 & 4-Stroke Outboards 6-300 HP (Replaces 703-82510-43-00)

Yamaha Ignition Switch Key – Fits Yamaha 2 & 4-Stroke Outboards 6-300 HP (Replaces 703-82510-43-00)

This ignition switch key assembly is designed for a wide range of Yamaha 2-stroke and 4-stroke outboard motors from 6 to 300 horsepower, manufactured between 1998 and 2013. It is also compatible with the Yamaha International VMAX series (2002-2013) and specific 225/250 HP models from 2003.

This part serves as a direct replacement for multiple Yamaha part numbers, including 703-82510-44-00, 703-82510-43-00, 703-82510-42-00, and 703-82510-11-00.

• Installation Location: Remote Control Box
• Connection Type: Push-in with protective sleeve
• Package Includes: 1 x Ignition Switch Assembly, 2 x Keys

Part Number Cross-Reference

Use this table to confirm equivalent part numbers.

Compatible Engine Models

Confirm your engine model/year in the table below. For Yamaha owners, here’s a guide to help you identify your engine’s serial/model: Yamaha Serial Number Guide. You can also review exploded diagrams to verify part numbers: Yamaha Parts Diagrams & Catalog.

Technical Specifications

Package Contents

• 1 x Ignition Switch Key Assembly (703-82510-43-00)
• 2 x Keys

Explosion Diagram

Installation Guide

1. Disconnect the negative battery cable to prevent electrical shorts.
2. Locate and access the rear of your remote control box where the ignition switch is mounted.
3. Carefully unplug the wiring harness connector from the back of the old ignition switch.
4. Unscrew the mounting nut that secures the switch to the panel and remove the old assembly.
5. Insert the new ignition switch into the panel, align it correctly, and tighten the mounting nut.
6. Firmly push the wiring harness connector into the new switch until it clicks into place.
7. Reconnect the battery cable, insert the key, and test all switch positions (OFF, ON, START) to ensure proper function.

Troubleshooting & FAQ

How can I verify this ignition switch fits my specific Yamaha outboard?

This switch fits a wide range of 6-300 HP Yamaha outboards (1998-2013). The best way to confirm is to match your existing part number to one of the direct replacement numbers listed: 703-82510-44-00, 703-82510-43-00, 703-82510-42-00, or 703-82510-11-00. You can also consult the compatible models table on this page.

What are common symptoms of a failing ignition switch?

Signs of failure include difficulty turning the key, the engine not cranking or starting intermittently, the engine shutting off unexpectedly, or accessories not receiving power when the key is in the "ON" position.

Is this a "push-to-choke" ignition switch?

Yes, this ignition switch assembly includes the push-to-choke function, which is common on many Yamaha outboard remote controls.

OEM vs. Aftermarket?

This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.

How fast do you ship and how much does it cost?

We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.

What is your warranty and return policy?

This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused & in original condition); please see our policy page or reach out for instructions.

Important Notes

• Verify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.
• This product is an aftermarket replacement part and is not an OEM component.
• Professional installation is recommended to ensure safety and optimal performance.

Why Choose JLM MARINE?

• Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
• Fast Global Shipping: Free delivery worldwide in 5–15 days.
• Direct from Manufacturer: Competitive pricing without compromising quality.