Boat Ignition Switch with Keys 87-17009A5 87-17009A2 for Mer-cury Mari-ner
4.5Editor score
Two keys included with switch
Rated up to thirty amps twelve volts
Maximum panel thickness five eighths inch
In this guide
Finding a reliable outboard motor ignition switch is critical for safe boating. A faulty switch can leave you stranded or create electrical hazards on the water. Choosing the right one ensures your engine starts smoothly every time you head out.
We evaluated ten highly rated ignition switches based on compatibility, durability, and ease of installation. Our analysis covers major brands like Mercury, Yamaha, and OMC to ensure you find a match for your specific motor model and control box setup.
Each pick includes detailed specs, pros, cons, and real-world performance insights. Note that prices and availability change frequently, so check current listings before purchasing. This guide helps you make an informed decision for your marine electrical system.
Top 3 Picks for Best Outboard Motor Ignition Switches
Boat Ignition Switch with Key Replacement for Mercury Mariner Outboard Motor Control Box
4.3Editor score
High performance polyester and brass construction
Six wires for push to choke function
Twenty-four month warranty included
703-82510-43-00 Outboard Ignition Switch Key for Yamaha 6-300 HP
4.4Editor score
Sealed glue process waterproof and dustproof
High strength polyoxymethylene material construction
Pure copper core for durability
Top 10 Best Outboard Motor Ignition Switches in 2026 Compared
This side-by-side comparison highlights the key specifications and features of each ignition switch to help you quickly identify the best fit for your outboard motor control box.
ProductsSpecificationsEditor scorePrice
Editor's Choice
Boat Ignition Switch with Key Replacement for Mercury Mariner Outboard Motor Control Box
Three position OFF RUN START switch
Six wire connectors for push to choke
Compatible with Mercury 87-17009A2
High performance polyester and brass material
4.3Editor score
Editor's Choice
50-11651 Boat Ignition Starter Switch for Johnson Evinrude Push to Choke
Six terminals with three positions
Push to choke feature included
Compatible with OMC inboard outboard
Includes two keys in package
4.3Editor score
Best Budget
Boat Ignition Switch with Keys 87-17009A5 87-17009A2 for Mer-cury Mari-ner
Rated up to thirty amps twelve volts
Six wires for push to choke
Maximum panel thickness five eighths inch
Compatible with Mercury 87-17009A5
4.5Editor score
703-82510-43-00 Outboard Ignition Switch Key for Yamaha 6-300 HP
Fits Yamaha 2 and 4 stroke
Sealed glue process waterproof design
High strength polyoxymethylene material
Pure copper core for conductivity
4.4Editor score
87-17009A5 87-17009A2 Boat Ignition Switch Replacement for Mercury Mariner
Three position OFF Ignition Start
Six wire push to choke switch
Non-conductive housing prevents short circuit
Compatible with Mercury 87-17009A5
4.4Editor score
5005801 Boat Ignition Key Switch for OMC Johnson Evinrude 40-200HP Motor
Includes safety lanyard for operator
Fits OMC 40 to 200 HP
Premium plastic and metal construction
Replaces part number 5005801
3.7Editor score
5005801 Boat Ignition Key Switch and Safety Lanyard
Safety lanyard cuts power immediately
Compatible with Johnson Evinrude 40-200HP
Extendable safety lanyard for flexibility
Direct replacement installation design
3.7Editor score
Ignition Switch 703-82510-44-00 for Yamaha Outboard Remote Control Box
Fits Yamaha 6 HP to 300 HP
Control Box ignition switch assembly
Push to choke functionality included
Compatible with Sierra MP51040
4.1Editor score
87-88107A8 87-88107A5 Boat Ignition Switch with Key for Mercury Outboard
Six wire design for push to choke
Potted wire base waterproof shockproof
Compatible with Mercury side mount
Three position OFF Ignition Start
4.3Editor score
Boat Ignition Switch with Key fit for Mercury Mariner Outboard Motor Control Box
Three position OFF run start design
Six wires for choke function
Compatible with Mercury 87-17009A5
High performance polyester and brass
4.6Editor score
1. Boat Ignition Switch with Key Replacement for Mercury Mariner – Best Overall Outboard Motor Ignition Switch
Boat Ignition Switch with Key Replacement for Mercury Mariner
3 Position OFF RUN START switch
6 wires for push to choke
High performance polyester and brass
24 month warranty included
This ignition switch is a top choice for Mercury Mariner owners needing a reliable replacement. It features a robust 3-position design and 6-wire connectors for push-to-choke functionality. The build quality with polyester and brass ensures longevity in marine environments.
Pros
- Direct plug and play installation
- Matches factory color codes
- Durable brass conductivity
- Extended warranty coverage
- Comes with two keys
Cons
- Verify part number before purchase
- May not fit all models
We may earn a commission when you buy through this link, at no additional cost to you.
The installation process is straightforward with color-matched wires that eliminate the need for splicing. This direct replacement meets OEM standards and includes two keys for convenience. The 24-month warranty adds significant peace of mind for buyers.
While highly rated, it is essential to verify your specific part number matches the compatibility list. Some users may need to check panel thickness limits before installation. These minor checks ensure a perfect fit and optimal performance.
Anyone with a Mercury Mariner outboard motor should consider this switch for its balance of quality and ease of use. It is ideal for boaters looking to restore reliable engine starting without complex wiring changes.
Durable Construction for Marine Use
The switch is made of high performance polyester and high quality brass which provides safety and excellent electrical conductivity.
Easy Plug and Play Setup
Colors on switch wires match factory color codes allowing direct replacement with no wire splicing required.
We may earn a commission when you buy through this link, at no additional cost to you.
2. 50-11651 Boat Ignition Starter Switch – Great Value Outboard Motor Ignition Switch
50-11651 Boat Ignition Starter Switch
6 Terminal 3 Position switch
Push to choke feature
Fits OMC inboard outboard
Includes two keys
This starter switch offers excellent value for owners of Johnson or Evinrude engines. The push to choke feature simplifies the cockpit layout by eliminating the need for a separate choke switch. It is designed for 6-terminal applications.
Pros
- Eliminates need for separate choke
- Affordable price point
- Includes two keys
- Standard 6 terminal design
- Fits many OMC models
Cons
- Check dimensions before buying
- Part number verification needed
We may earn a commission when you buy through this link, at no additional cost to you.
The switch includes two keys and follows the standard 3-position Off-ON-Start configuration. Its compact size fits well into most control boxes. The design ensures reliable starting and stopping of your engine.
Users should verify the physical dimensions of their current switch before ordering. Panel thickness and terminal spacing can vary slightly across model years. Ensuring a match avoids installation issues.
This switch is perfect for budget-conscious boaters who need a functional replacement. It works well for OMC inboard and outboard applications where space is limited and reliability is key.
Push to Choke Convenience
The push to choke feature eliminates the need for a separate choke switch simplifying your control setup.
Standard OMC Compatibility
It is designed for most OMC inboard and outboard applications ensuring broad fitment.
We may earn a commission when you buy through this link, at no additional cost to you.
3. Boat Ignition Switch with Keys 87-17009A5 – Best Budget Outboard Motor Ignition Switch
Boat Ignition Switch with Keys 87-17009A5
Rated up to 30 Amps 12V
6 wires for push to choke
Max panel thickness 5/8 inch
Comes with 2 keys
This ignition switch provides a budget-friendly solution for Mercury Mariner boats. It supports 30 Amps at 12V and features 6 wires for the push-to-choke function. The build quality is solid for the price point.
Pros
- Very affordable price
- Direct OEM standard replacement
- Includes two keys
- Simple plug and play
- Excellent electrical conductivity
Cons
- Check panel thickness
- Verify wiring diagram
We may earn a commission when you buy through this link, at no additional cost to you.
Installation is simple with factory-matched wire colors. The switch is made of durable polyester and brass ensuring reliable conductivity. It includes two keys which is a nice bonus for owners.
The panel thickness limit is 5/8 inches so measure your dashboard before buying. This constraint ensures the switch fits securely without loosening over time. Checking this detail prevents returns.
It is an ideal choice for those needing a quick fix without overspending. The quality meets or exceeds OEM standards making it a smart buy for daily boaters.
Affordable Quality Replacement
This switch offers excellent value with a design that meets or exceeds OEM standards.
Two Keys Included
The package includes two keys ensuring you have a spare available at all times.
We may earn a commission when you buy through this link, at no additional cost to you.
4. 703-82510-43-00 Outboard Ignition Switch Key for Yamaha – Best Premium Outboard Motor Ignition Switch
703-82510-43-00 Outboard Ignition Switch Key for Yamaha
Fits Yamaha 6 HP to 300 HP
Sealed glue process waterproof
High strength polyoxymethylene
Pure copper core
This ignition switch is designed for Yamaha outboard motors ranging from 6 to 300 HP. It uses a high strength polyoxymethylene material and a pure copper core for superior durability. The sealed glue process makes it waterproof and dustproof.
Pros
- Premium waterproof sealing
- Fits a wide range of Yamaha
- High strength material
- Pure copper for durability
- Easy no tool install
Cons
- Verify Yamaha model year
- Specific to Yamaha brand
We may earn a commission when you buy through this link, at no additional cost to you.
Installation is incredibly easy requiring no tools. You simply connect the original cable and tighten the nut. This design ensures a secure fit and reliable performance in harsh marine environments.
It is important to check that your engine falls within the supported horsepower range. The switch replaces multiple OEM part numbers so verify compatibility carefully. This ensures the correct fit for your model.
For Yamaha owners this switch offers premium protection against water and dust. The robust construction ensures it will last through many seasons of boating. It is a top pick for reliability.
Waterproof and Dustproof Design
The sealed glue process ensures the switch is waterproof and dustproof protecting it from elements.
No Tool Installation
The easy install design allows you to complete the setup without needing any tools.
We may earn a commission when you buy through this link, at no additional cost to you.
5. 87-17009A5 87-17009A2 Boat Ignition Switch Replacement – Reliable Mercury Outboard Motor Ignition Switch
87-17009A5 87-17009A2 Boat Ignition Switch Replacement
3 Position Off Ignition Start
6 wire push to choke
Non-conductive housing
Corrosion resistant
This replacement switch offers strong corrosion protection ideal for marine environments. It is designed to prevent oxidation and includes a non-conductive housing to avoid potential short circuits. The quality is high for a direct replacement.
Pros
- Corrosion protection coating
- Prevents short circuits
- Comes with two keys
- Factory color code match
- One year warranty
Cons
- Not genuine OEM
- Check fitment carefully
We may earn a commission when you buy through this link, at no additional cost to you.
The color-coded wires match factory standards making installation straightforward. You get two keys and a one year warranty with the purchase. This ensures reliability and peace of mind for owners.
Note that it is not a genuine Mercury part but meets OEM standards. Always check the part number before purchasing to ensure compatibility with your control box. This avoids fit issues.
It is a solid option for those needing a reliable ignition switch without paying OEM prices. The features and protection make it a great choice for frequent boaters.
Corrosion Protection
The switch has great corrosion protection to eliminate oxidation and extend service life.
Non-Conductive Safety
Non-conductive housing of ignition key can prevent potential short circuits.
We may earn a commission when you buy through this link, at no additional cost to you.
6. 5005801 Boat Ignition Key Switch for OMC Johnson Evinrude – Safety Outboard Motor Ignition Switch
5005801 Boat Ignition Key Switch for OMC Johnson Evinrude
Includes safety lanyard
Fits 40 to 200 HP
Premium plastic and metal
Replaces 5005801
This switch assembly includes a safety lanyard to shut off the engine if the operator falls overboard. It is designed for OMC Johnson Evinrude motors from 40 to 200 HP. The safety feature is crucial for crew protection.
Pros
- Includes safety lanyard
- Shuts off engine if operator falls
- Plug and play design
- Durable construction
- Two keys included
Cons
- Lower rating than others
- Verify part number
We may earn a commission when you buy through this link, at no additional cost to you.
The construction uses premium plastic and metal for reliability. It is a direct plug and play replacement ensuring quick setup. The package includes two keys and the lanyard for immediate use.
While it has a lower rating compared to other options it offers a vital safety feature. Always verify your part number matches 5005801 before purchasing. This ensures compatibility with your engine.
This switch is perfect for boaters prioritizing safety and simple installation. The lanyard feature adds peace of mind for those who run alone or with family.
Safety Lanyard Feature
The safety lanyard attaches to operator's life vest or wrist shutting off engine if they fall overboard.
Premium Construction
Made of premium plastic and metal for reliability safety and durability.
We may earn a commission when you buy through this link, at no additional cost to you.
7. 5005801 Boat Ignition Key Switch and Safety Lanyard – Functional Outboard Motor Ignition Switch
5005801 Boat Ignition Key Switch and Safety Lanyard
Compatible with Johnson Evinrude OMC
Extendable safety lanyard
Includes 2 keys
Plug and play
This ignition switch assembly includes an extendable safety lanyard for flexible use. It is compatible with Johnson Evinrude OMC motors from 40 to 200 HP. The switch provides a reliable kill switch feature for safety.
Pros
- Extendable lanyard for flexibility
- Direct replacement design
- Includes all necessary items
- Safety kill switch
- Easy to use
Cons
- Check motor compatibility
- Verify part numbers
We may earn a commission when you buy through this link, at no additional cost to you.
It is designed as a direct replacement with plug and play setup. The package includes the switch two keys and the lanyard for immediate installation. Quality control ensures reliability for the engine.
Verify your motor compatibility and part numbers before purchasing. This ensures the switch fits correctly and works with your existing system. Checking these details avoids installation issues.
It is a good choice for boaters needing a safety-focused replacement. The extendable lanyard makes it user-friendly for various operator positions and boat sizes.
Extendable Safety Lanyard
The extendable safety lanyard allows for flexible use making it more user friendly.
Safety First Design
The switch cuts off power if the operator falls protecting both person and boat.
We may earn a commission when you buy through this link, at no additional cost to you.
8. Ignition Switch 703-82510-44-00 for Yamaha Outboard – Compatible Outboard Motor Ignition Switch
Ignition Switch 703-82510-44-00 for Yamaha Outboard
Fits Yamaha 6 HP to 300 HP
Push to choke function
For Remote Control Box
Sierra MP51040 compatible
This ignition switch is made for Yamaha outboard remote control boxes. It fits a wide range of Yamaha motors from 6 to 300 HP including VMAX and 2-stroke models. The push to choke function is included.
Pros
- Wide Yamaha compatibility
- Remote control box design
- Push to choke included
- Affordable price
- Simple installation
Cons
- Verify model year
- Check terminal layout
We may earn a commission when you buy through this link, at no additional cost to you.
It replaces multiple OEM part numbers ensuring broad compatibility. The installation is straightforward with a direct fit design. Users appreciate the ease of getting the system working again.
Check the model year and horsepower range before purchasing to ensure a match. The switch works with Sierra MP51040 equivalents for flexibility. This helps when OEM parts are unavailable.
It is a solid option for Yamaha owners needing a remote control switch replacement. The features provide reliable starting and control for various Yamaha outboard configurations.
Wide Yamaha Compatibility
Fits most Yamaha outboard motors from 6 HP to 300 HP including VMAX series.
Remote Control Box Design
This switch is designed specifically for Yamaha outboard remote control boxes.
We may earn a commission when you buy through this link, at no additional cost to you.
9. 87-88107A8 87-88107A5 Boat Ignition Switch – Robust Outboard Motor Ignition Switch
87-88107A8 87-88107A5 Boat Ignition Switch
Compatible with Mercury side mount
Potted wire base waterproof
3 Position Off Ignition Start
High performance polyester
This switch is built for marine durability with a potted wire base that ensures it is waterproof and shockproof. It fits most Mercury Outboard Motors from 1994 onwards using a side mount control box. The design resists salt-spray.
Pros
- Potted wire base waterproof shockproof
- Side mount control box fit
- Salt-spray resistant
- Includes two keys
- Pre-wired harness
Cons
- Verify part number match
- Check year range
We may earn a commission when you buy through this link, at no additional cost to you.
Installation is easy with a pre-wired harness and two keys included. The wiring is color-coded to match factory standards reducing installation time. It provides a reliable solution for starting issues.
Confirm your model year is 1994 or later before purchasing to avoid fitment issues. The switch replaces multiple part numbers but verification is key. This ensures you get the correct fit.
It is an excellent choice for older Mercury models needing a durable replacement. The waterproof features and corrosion resistance make it ideal for saltwater boating.
Potted Wire Base Waterproof
The potted wire base ensures the switch is waterproof and shockproof for harsh marine environments.
Marine Grade Durability
Crafted from high-performance polyester and premium brass offering superior electrical conductivity.
We may earn a commission when you buy through this link, at no additional cost to you.
10. Boat Ignition Switch with Key fit for Mercury Mariner Outboard – Practical Outboard Motor Ignition Switch
Boat Ignition Switch with Key fit for Mercury Mariner Outboard
3 Position OFF run start
6 wires for choke function
High performance polyester and brass
Includes 2 keys
This switch offers high compatibility with most Mercury Outboard Control Boxes. It features a 3-position design and 6-wire connectors for the choke function. The build uses high performance polyester and brass for durability.
Pros
- High compatibility with Mercury
- Color-coded wires
- Quick installation
- High quality materials
- One year warranty
Cons
- Check motor model
- Verify wiring
We may earn a commission when you buy through this link, at no additional cost to you.
Installation is simple with color-coded wires matching original factory coding. This makes assembly efficient and convenient for DIY installers. You get two keys with the package.
Always double check the fitment for your motorized boat before purchasing. The warranty provides one year of support for any issues. This ensures you are protected after purchase.
It is a great choice for those needing a reliable and efficient switch. The combination of quality and ease of installation makes it a strong contender in the market.
Color Coded Wires
The wires are color-coded to match the original factory color-coding which makes your assembly more efficient.
Durable Materials
Made of high performance polyester and high quality brass materials for superior durability and conductivity.
We may earn a commission when you buy through this link, at no additional cost to you.
Buying Guide – How to Choose the Best Outboard Motor Ignition Switches
Selecting the right ignition switch involves checking compatibility, materials, and safety features to ensure reliable starts.
Compatibility with Your Motor Brand
Always verify the switch is designed for your specific motor brand and model. Mercury Yamaha and Johnson use different part numbers and wiring configurations. Check the product description for exact match details before purchasing to avoid returns.
Matching the brand and model year ensures the switch will fit your control box correctly.
Material Quality and Corrosion Resistance
Look for switches made with high performance polyester and brass for durability. Marine environments are harsh so corrosion resistance is vital for long term use. Sealed glue processes or waterproof features add protection against salt spray.
Durable materials prevent oxidation and ensure reliable electrical conductivity over time.
Wiring and Plug and Play Design
Choose switches with factory matched wire colors to simplify installation. A plug and play design avoids the need for splicing or complex wiring changes. This saves time and reduces the risk of electrical errors during setup.
Color coded wires ensure you connect each terminal to the correct factory wire easily.
Key Options and Spare Keys
Most replacements come with two keys but always confirm this in the package contents. Having a spare key is crucial for emergencies or if one key gets lost. Some premium models include a lanyard attachment for safety features.
Including multiple keys adds convenience and peace of mind for boat owners.
Safety Lanyard Features
Consider switches that include a safety lanyard to shut off the engine if the operator falls overboard. This feature is essential for safety on single operator boats or when children are present. Verify your boat's safety requirements before buying.
A lanyard switch enhances crew protection by automatically stopping the engine if the operator is separated.
Warranty and Support
Look for manufacturers that offer warranties ranging from one year to twenty four months. A warranty indicates confidence in the product quality and protects your investment. Ensure there is accessible customer support for fitment questions.
A good warranty helps cover defects and ensures long term reliability for your switch.
Panel Thickness and Fitment
Measure the maximum panel thickness your current switch supports before buying. Some switches fit panels up to 5/8 inch so verify your dashboard specs. Incorrect thickness can cause mounting issues or loose switches.
Checking the panel thickness ensures the switch secures properly without gaps.
Budget and Value
Balance your budget with the features you need such as waterproofing and warranty. Higher priced models may offer better protection but budget options can still work well. Compare ratings and reviews to gauge overall value.
Choosing a switch that fits your needs prevents overspending on unnecessary features.
How to Use and Care for Your Outboard Motor Ignition Switches
Always disconnect the battery before installing or removing the ignition switch to prevent electrical shorts or accidental starts. Use a multimeter to test continuity if you suspect wiring issues before replacing the switch.
When installing the new switch match the wire colors exactly to the original factory wires. Use the included hardware and tightening nut to secure the switch firmly to the control box panel.
After installation test the key turns and push to choke functionality with the battery reconnected. Keep the spare key in a safe place and inspect the switch annually for signs of corrosion or wear.
Frequently Asked Questions
How do I know which ignition switch fits my Mercury boat?
Check the part number on your current switch or in your owner's manual. Most Mercury switches replace part numbers like 87-17009A5 or 87-17009A2. Ensure the product description matches your control box type.
Can I install an ignition switch without a multimeter?
Yes if the switch is a direct replacement with color matched wires. Simply follow the wire colors to connect them correctly. Always disconnect the battery before starting the work to be safe.
What does a push to choke function do on these switches?
The push to choke allows you to pull the key to engage the choke for starting a cold engine. This eliminates the need for a separate choke switch on your dashboard. It simplifies the control box layout.
Is it safe to use a non OEM ignition switch?
Most aftermarket switches meet or exceed OEM standards for reliability and safety. Check reviews and ratings to ensure quality. Look for features like brass construction and corrosion resistance.
Why does my key turn hard in the ignition switch?
A hard turning key often means the internal contacts are worn or damaged. Replacing the switch with a new one resolves this issue. Ensure the new switch matches your existing wiring configuration.
Do these switches come with a warranty?
Many suppliers offer warranties ranging from one year to twenty four months. Check the product page for specific warranty details. This covers manufacturing defects and provides peace of mind.
Final Thoughts on Choosing the Best Outboard Motor Ignition Switches
We have reviewed ten top-rated ignition switches offering various options for Mercury Yamaha and OMC owners. Our top picks provide a mix of safety, durability, and ease of installation to meet your needs.
Prioritize switches with brass construction and waterproof features for long term reliability. Ensure you verify compatibility with your control box and motor model before purchasing to avoid fitment issues.
Prices change frequently so check current listings for the most up to date pricing and availability. This guide helps you make an informed decision to keep your boat running smoothly.