Sierra MP52000 Magneto Ignition Switch 3-Position Off-Run-Start Push-to-Choke

The Sierra MP52000 is a heavy-duty magneto ignition switch designed for marine applications requiring reliable off-run-start functionality with integrated push-to-choke capability. Constructed from marine-grade glass-filled polyester, this switch delivers exceptional impact and corrosion resistance for years of dependable service in harsh marine environments.

Key Features:

• Three-position operation: Off-Run-Start with push-to-choke function
• Marine-grade glass-filled polyester construction for maximum corrosion protection
• Six color-coded wire leads match Mercury Marine factory color codes for simplified installation
• Fits standard 7/8" diameter mounting hole with maximum 5/8" panel thickness
• Heavy-duty potted construction eliminates moisture intrusion
• Inner seal between cylinder lock and contact plate prevents corrosion
• Non-conductive housing eliminates potential electrical shorts
• Includes two umbrella-type keys with different key codes for added security
• Hex black plastic face nut and plastic backup nut included

Electrical Ratings:

• Ignition: 15A @ 12V DC
• Solenoid: 30A @ 12V DC
• Choke: 7A @ 12V DC

This switch serves as an exact OEM replacement for Mercury Marine and Mercury Sport Jet part number 87-88107A5. The minimal bleed per circuit design ensures reliable electrical performance, while the potted terminal construction provides superior protection against the marine environment. Ideal for boats equipped with Mercury outboards requiring magneto ignition control with choke functionality.