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Add to CartSierra Marine's replacement engine components are manufactured to meet or exceed OEM requirements. This ignition switch provides maximum corrosion protection and features a non-conductive housing that eliminates potential shorts. It also features an inner seal between the cylinder lock and contact plate.
Specifications:
Interchange:
What is the Sierra MP41040 4 Position Ignition Switch used for?
The Sierra MP41040 is a replacement 4-position conventional ignition switch with Acc, Off, Run, and Start functions. It features a non-conductive housing, an inner seal between the cylinder lock and contact plate, and corrosion protection.
What are the switch positions on the Sierra MP41040?
The Sierra MP41040 has four positions: Acc, Off, Run, and Start. It is a conventional 4-position ignition switch designed to provide these listed functions.
What are the electrical ratings of the Sierra MP41040 ignition switch?
The Sierra MP41040 is rated at 15 amps at 12V DC for the accessory circuit, 15 amps at 12V DC for ignition, and 30 amps at 12V DC for the solenoid.
What size mounting hole does the Sierra MP41040 require?
The Sierra MP41040 requires a 7/8-inch mounting hole. It uses a brass backup nut and a knurled black plastic face nut with a rubber cap. Verify the mounting dimensions before installation.
What features protect the Sierra MP41040 from corrosion and electrical shorts?
The Sierra MP41040 features maximum corrosion protection, an inner seal between the cylinder lock and contact plate, and a non-conductive housing designed to eliminate potential shorts.
Is the Sierra MP41040 interchangeable with another ignition switch?
The Sierra MP41040 is listed as interchangeable with Seadog part number 420375-1. Verify the existing switch part number and application before purchasing a replacement.
California Residents: 
WARNING
Cancer and Reproductive Harm -
P65Warnings.ca.gov
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