Sierra SIEMP51090 Mercury Engines Key Switch

Sierra SIEMP51090 Ignition Key Switch for Mercury Engines

Restore the reliability and security of your vessel´s ignition system with the Sierra SIEMP51090 Mercury Engines Key Switch. Engineered as a premium, direct-fit replacement, this ignition switch is the definitive solution for boaters seeking to replace a worn, intermittent, or faulty original switch on their Mercury outboard engine. As a critical component within your boat´s electrical connections, a dependable ignition switch is paramount for safety and operational confidence. This Sierra switch is meticulously designed to meet or exceed the stringent specifications of the original equipment manufacturer, ensuring a perfect fit, flawless function, and lasting durability in the harsh marine environment. From the moment you turn the key, you´ll feel the crisp, positive action that signifies quality engineering, giving you peace of mind that your engine will respond when you need it to.

Experience the key benefits of upgrading to a Sierra ignition switch. Enjoy effortless cold starts thanks to the integrated push-to-choke functionality, which simplifies the starting procedure and gets you underway faster. This switch provides a secure and reliable electrical connection, eliminating the frustrating starting issues caused by corrosion or internal wear in an old switch. Built for the marine world, its robust construction features corrosion-resistant materials, including a potted base that seals the internal electronics from moisture, salt spray, and vibration, dramatically extending its service life. This complete kit comes with two encapsulated keys, ensuring you always have a spare, and its pre-wired pigtail harness makes installation a straightforward process for both professional marine mechanics and experienced DIY boat owners.

Main Features

* Three-Position Operation: Off / Run / Start
* Integrated Push-to-Choke Functionality in the Start Position
* Designed as a Direct OEM Replacement for a Perfect Fit
* Magneto Style Ignition Switch Configuration
* Includes a Pair of Two Encapsulated, Matching Keys
* Pre-wired with a 6-Spade Pigtail Harness for Easy Installation
* Potted Base Construction to Prevent Moisture Intrusion and Corrosion
* Durable, UV-Stable Faceplate and Housing

Technical Specifications

* Brand: Sierra Marine
* Part Number: SIEMP51090
* Category: Electronics
* Subcategory: Electrical Connections
* Switch Type: Ignition Key Switch, Magneto
* Application: Designed for most Mercury outboard engines requiring a magneto ignition switch with push-to-choke.
* Replaces OEM Part Numbers: Mercury Marine 87-17009A5
* Positions: 3 (Off, Run, Start)
* Special Function: Push-to-Choke
* Terminal Type: 6-Spade Connector on Pigtail Harness
* Voltage Rating: 12V DC
* Ignition Rating: 15 Amps
* Solenoid Rating: 30 Amps
* Choke Rating: 7 Amps
* Required Panel Hole Diameter: 7/8" (22.2 mm)
* Maximum Panel Thickness: 5/8" (15.9 mm)