Sierra Ignition Switch MP51010 - Replaces 37110-99E00 - Suzuki 2 & 4 Stroke Outboards

The Sierra MP51010 is a keyed ignition switch built for Suzuki 2 and 4 stroke outboard engines. It serves as the primary start/run control at the helm, completing the circuit that energizes the ignition system when the key is turned. The switch uses a molded umbrella-style cover over the wiring connections, shielding the terminals from spray, rain, and humidity in the open-boat environment where these switches are typically panel-mounted. Internally, the switch uses copper contacts in a normally open, 1-way circuit configuration, paired with a Molex-style pin and socket connector for a secure plug-in fit. A key detail for installers: the colors on the switch's wire leads match the factory color codes used on Suzuki wiring harnesses, so the switch can be wired in without having to trace or relabel circuits. The housing is white to match typical outboard control housings. This switch is designed to meet or exceed the performance of the original equipment part it replaces, and it directly replaces Suzuki OEM part number 37110-99E00. It is sold individually under part number MP51010; a bulk carton option is also offered under a separate part number for buyers who need higher quantities. Whether repairing a no-start condition caused by a worn or failed ignition switch, or performing routine electrical maintenance on a Suzuki outboard, this switch provides a factory-matched, drop-in replacement.

Specifications

• Brand: Sierra
• Manufacturer Part Number: MP51010
• Product Type: Ignition Switch
• Operation Mode: Electronic
• Contact Type: Normally Open
• Circuit Type: 1-way
• Connector Type: Molex
• Terminal: Pin/Socket
• Mounting Type: Panel Mount
• Material: Copper (contacts)
• Color: White
• Item Dimensions: 1.5 x 5.12 x 9.06 inches
• Package Dimensions: 22.606 cm x 13.462 cm x 5.08 cm
• Weight: 0.11 pounds
• Country of Origin: Taiwan
• UPC: 808282229764

Fitment

• Suzuki 2 and 4 stroke outboards

Replaces (OEM)

• 37110-99E00

Frequently Asked Questions

What OEM part number does the Sierra MP51010 ignition switch replace? The MP51010 replaces Suzuki OEM part number 37110-99E00, so it can be installed as a direct substitute for that original switch.

What engines does the MP51010 ignition switch fit? This switch is designed for Suzuki 2 and 4 stroke outboard engines.

Is the MP51010 a genuine Suzuki part or an aftermarket switch? MP51010 is a Sierra-brand aftermarket ignition switch engineered to meet or exceed the performance of the original Suzuki equipment it replaces, not a Suzuki-branded part.

What are the switch contacts made of? The MP51010 ignition switch uses copper contacts in a normally open, 1-way circuit configuration.

Will the wiring match my Suzuki outboard's existing harness colors? Yes, the wire leads on the MP51010 are color coded to match the factory color codes used on Suzuki wiring, which simplifies installation.

Does the MP51010 have any weatherproofing? It uses a molded umbrella-style cover over the connection area to help protect the wiring from moisture and spray.

What connector type is used on the MP51010? The switch terminates in a Molex-style pin and socket connector.

How much does the MP51010 ignition switch weigh? The Sierra MP51010 ignition switch weighs 0.11 pounds.

Where is the MP51010 switch mounted? It is a panel-mount ignition switch, intended to be installed into a helm or dash panel.

What color is the MP51010 switch housing? The housing is white.

Where is the MP51010 manufactured? The Sierra MP51010 ignition switch is made in Taiwan.

Can I buy the MP51010 ignition switch in bulk? Yes, in addition to the individually packaged MP51010, the same switch is offered in a bulk carton under a separate part number for buyers who need higher quantities.