Sierra MP41000 Ignition Switch, Push to Choke 3-Position, Replaces 87-17009A2

The Sierra MP41000 is a 3-position push-to-choke ignition switch built for marine outboard and sterndrive engines. It uses a 6-wire sealed polyester housing designed to hold up against moisture, salt spray, and vibration in the harsh marine environment, while a non-conductive housing construction helps eliminate potential shorts around the helm. An inner seal between the cylinder lock and contact plate adds a further layer of protection against water intrusion reaching the electrical contacts.

This switch mounts through a 7/8 inch panel hole and is finished in white to match common helm and dash configurations. As a direct replacement part, it is engineered to meet or exceed the performance of the original equipment switch it replaces, making it a straightforward swap when an existing ignition switch has corroded, stuck, or failed. Sierra manufactures this and other marine electrical parts to OEM specifications, supplying engine manufacturers and boat builders with replacement components for daily use on the water.

Specifications

• Brand: Sierra
• Manufacturer Part Number: MP41000
• Switch Type: Ignition Switch
• Operation: Push to Choke
• Number of Positions: 3 Position
• Wiring: 6 Wire
• Housing: Sealed Polyester
• Material: Polyester
• Color: White
• Hole Size: 7/8 inch
• Connector Type: Crimp
• Terminal: Marine
• Item Dimensions: 4.87 x 1.62 x 7 inches
• Weight: 0.23 pounds

Fitment

Designed for marine ignition systems using this 3-position push-to-choke, 6-wire switch configuration.

Replaces (OEM)

• 87-17009A2

Frequently Asked Questions

What does the MP41000 ignition switch replace? The Sierra MP41000 is a direct replacement for OEM part number 87-17009A2.

How many wires does this ignition switch use? The MP41000 is a 6-wire ignition switch, wired to support its 3-position push-to-choke operation.

What size mounting hole does the MP41000 need? This switch requires a 7/8 inch panel hole for installation.

What color is the Sierra MP41000 switch? It is finished in white, which is a common helm and dash color for marine ignition switches.

Is the MP41000 sealed against water and moisture? Yes, the MP41000 has a sealed polyester housing along with an inner seal between the cylinder lock and contact plate to help keep water out of the electrical contacts.

What material is the MP41000 ignition switch made of? The housing is made of polyester, chosen for its resistance to the marine environment.

How many positions does the MP41000 have? The MP41000 is a 3-position switch with push-to-choke functionality.

What connector type does the MP41000 use? The MP41000 uses a crimp-style connector with marine-rated terminals.

Will the MP41000 fit the same location as my old ignition switch? If your current switch is stamped with OEM number 87-17009A2, the MP41000 is designed as a direct fit replacement for it.

Is the Sierra MP41000 an OEM-equivalent part or aftermarket? The MP41000 is manufactured to meet or exceed the performance of the original OEM switch it replaces.

What are the dimensions of the MP41000 ignition switch? The MP41000 measures 4.87 x 1.62 x 7 inches.

How much does the MP41000 ignition switch weigh? The MP41000 weighs 0.23 pounds.