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87-17009A5 MP51090 Ignition Key Switch for Mercury 3 Position Off Run Start
$57.19
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$57.19
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Ignition Key Switch for Mercury
This 3-position Off-Run-Start ignition key switch for Mercury replaces OEM part numbers 87-17009A5 and MP51090, providing reliable engine start/stop control for compatible Mercury marine engines.
Overview
The Ignition Key Switch for Mercury is a three-position replacement switch (Off-Run-Start) designed for Mercury outboard and inboard engines. It serves as a direct substitute for original part numbers 87-17009A5 and MP51090, offering a hassle-free installation and dependable ignition switching.
Built For Performance
- Three clearly marked positions: Off, Run, and Start
- Rugged construction withstands marine moisture and vibration
- Includes key for secure operation
- Direct plug-in replacement for listed OEM switches
- Corrosion-resistant terminals ensure consistent electrical contact
On-The-Job Use
- Starting and stopping Mercury outboard engines
- Replacing a worn or faulty ignition switch on a boat console
- Restoring reliable electrical power to the ignition system
- Providing a simple on/off/start interface for marine applications
Specs At A Glance
| Part Number(s) | 87-17009A5, MP51090 |
| Positions | 3 (Off-Run-Start) |
| Type | Ignition Key Switch |
Good To Know
Q: Does this switch include a key? A: Yes, the ignition key switch comes with one key for locking and unlocking the Off, Run, and Start positions.
Q: Will this work on a 1990 Mercury 50 HP outboard? A: It is compatible with many Mercury engines using the 87-17009A5 or MP51090 switch, but verify your specific engine���s part number to ensure a match.
Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.