• Sierra MP51090 Mercury Ignition Switch 3 Position
  • Sierra MP51090 Mercury Ignition Switch 3 Position
  • Sierra MP51090 Mercury Ignition Switch 3 Position
  • Sierra MP51090 Mercury Ignition Switch 3 Position
1 4
Sierra Marine

Sierra MP51090 Mercury Ignition Switch 3 Position

Sierra MP51090 Mercury Ignition Switch 3 Position

SIE-MP51090

Brand Sierra Marine Part No. MP51090 UPC 808282269067

$45.99 USD
$45.99 USD
Sale Sold out
Shipping calculated at checkout.

Hurry, only 5 left in stock
Earn 45 Boat Points Learn More

Sierra MP51090 Mercury Ignition Switch 3 Position

Sierra MP51090 Mercury Ignition Switch replaces Mercury Marine OEM Part # 87-17009A5.

Specifications

MaterialPolyester
Package size2.25 in x 3.5 in x 9 in
Shipping weight0.3
  • Back Up Nut: Not Required
  • Face Nut: Hex Black Plastic
  • Hole Size: 7/8"
  • Length: Short: 5/8" maximum panel thickness
  • Material: Polyester
  • Rated Choke: 7 Amp @ 12v DC
  • Rated Ignition: 15 Amp @ 12v DC
  • Rated Solenoid: 30 Amp @ 12v DC
  • Terminal Type: 6 Color Coded Wire Leads/Potted
  • Switch Positions: Off - Run - Start
  • TYPE: 3 Position Magneto
  • Exact OEM replacement installation
  • Heavy duty potted construction
  • Minimal bleed per circuit
  • Molded umbrella type key
  • Push to choke
  • Maximum corrosion protection - eliminates oxidation
  • Inner seal between cylinder lock and contact plate
  • Non-conductive housing eliminates potential shorts
View full details

Blog posts

View all
Best Fiberglass Cutting Tools for Clean Edges: WBT vs WBT2
Buyer's Guides Tools & Techniques
11 September 2026

Best Fiberglass Cutting Tools for Clean Edges...

Read More
11 September 2026

Best Fiberglass Cutting Tools for Clean Edges...

Read More
Kevlar Fabric for Boats: A Fabricator's Guide to Choosing the Right Aramid Cloth
Boat Building & Projects Buyer's Guides Carbon Fiber & Kevlar
21 August 2026

Kevlar Fabric for Boats: A Fabricator's Guide...

Read More
21 August 2026

Kevlar Fabric for Boats: A Fabricator's Guide...

Read More
Resin Mixing Mistakes That Ruin Your Composite Project (And How to Avoid Them)
Repair & Maintenance Resin & Epoxy Systems Tools & Techniques
18 August 2026

Resin Mixing Mistakes That Ruin Your Composit...

Read More
18 August 2026

Resin Mixing Mistakes That Ruin Your Composit...

Read More