My Account
Shopping Cart

Sierra MP39020 2-Position Ignition Starter Switch 12V 15A Brass

Manufacturer

Sierra

<p>For nearly six decades, Sierra has established itself as one of the marine industry's most trusted names in aftermarket engine and drive parts. Founded as a specialized marine parts manufacturer, Sierra has grown into a comprehensive supplier of replacement components, instrumentation, and accessories for both recreational and commercial boating applications. Operating from their 300,000-square-foot distribution center in Litchfield, Illinois, Sierra serves boat owners and marine technicians worldwide with an extensive catalog of parts engineered specifically for the harsh saltwater environment.</p><h3>Marine Engine Excellence</h3><p>Sierra's reputation was built on delivering precision-engineered internal engine components and drive system parts that meet or exceed OEM specifications. Their <a href="/7570-sierra-engine-gasket-set-5404">engine gasket sets</a> provide critical sealing solutions for inboard and outboard motors, while their <a href="/7570-sierra-engine-complete-assembly-15341">engine complete assemblies</a> offer comprehensive replacement options for major overhauls. Each component undergoes rigorous testing to ensure reliability in demanding marine conditions, from corrosion resistance to temperature cycling performance.</p><h3>Instrumentation and Monitoring Systems</h3><p>Accurate instrumentation is essential for boat operators to monitor engine health and prevent costly breakdowns on the water. Sierra's comprehensive line of <a href="/7570-sierra-gauges-200483">gauges</a> includes everything from fuel pressure and temperature indicators to voltmeters and trim gauges, all designed with marine-grade materials that withstand vibration, moisture, and UV exposure. Their <a href="/7570-sierra-tachometer-gauge-1488">tachometer gauges</a> deliver precise RPM readings critical for optimizing engine performance and fuel efficiency. Supporting these instruments, Sierra's <a href="/7570-sierra-gauge-resistor-47908">gauge resistors</a> ensure proper signal conditioning and accurate readings across various sensor types and engine configurations.</p><h3>Expanded Product Portfolio</h3><p>In 2022, Sierra significantly broadened its scope beyond traditional marine engine parts to encompass a wider range of boating accessories and even outdoor power equipment components. This strategic expansion brought established marine brands like Shields and Moeller under the Sierra umbrella, creating a one-stop resource for marine maintenance and replacement parts. The company now offers fuel systems, electrical components, battery charging solutions, and NMEA electronics alongside their traditional engine parts lineup.</p><h3>Quality Backed by Industry-Leading Warranties</h3><p>What sets Sierra apart in the crowded aftermarket marine parts market is their commitment to standing behind every component they manufacture. Their warranty coverage extends beyond simple part replacement—it includes shop labor, haul-out fees, towing charges, and related incidental costs should a warrantied part fail. This comprehensive protection reflects the company's confidence in their manufacturing processes and quality control standards. For boat owners facing repairs far from shore or mechanics working on customer vessels, this peace of mind is invaluable. Whether you're maintaining an outboard motor, rebuilding an inboard engine, or upgrading your boat's instrumentation, Sierra's decades of marine industry experience and commitment to quality make them a reliable choice for keeping your vessel running at peak performance.</p>

Part Number

MP39020
06/01/2036 6:12 PM
Sale Price

$39.06

In Stock (5)

delivery box

Usually delivered within 2 days

Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Sierra MP39020 is a heavy-duty 2-position ignition starter switch designed for marine applications. This traditional brass switch features corrosion-resistant construction built to withstand harsh marine environments.

Key Features:

  • 2-position operation: Off and Ignition positions
  • Brass construction with corrosion-resistant properties
  • 12-volt DC electrical system, rated for 15 amps
  • 1 1/8 inch panel mounting diameter (7/8 inch mounting hole)
  • 2 screw terminals for simplified wiring
  • Designed for use with a separate starter button

This conventional ignition switch does not include push-to-choke functionality. Ideal for replacing worn or damaged ignition switches on boats, marine equipment, and other 12V applications requiring reliable on/off control. The brass construction ensures long-lasting performance in wet, saltwater environments where corrosion is a concern.

Products specifications

Diameter

7/8" Mounting Hole

Type

Ignitions

Voltage

Ignition 15 Amps at 12 Volts DCSolenoid 30 Amps at 12 Volts DC

Warranty Details

One Year

Quick and easy

Good

nice and easy

Checked everywhere for the best price... Autoplicity saved me $85.

good! but if can shipping quickly will be better.

Will shop agaib

very easy

Easy

i found the best deal on the web on an ARB bumper here and shipping was also the lowest ive seen, so long 4wheelparts.com i found a new place to shop.....

good merchant will do business with you again referred my friends to your website

It is easy to buy...

Great customer service and fast shipping. I highly recommend this company for auto parts.

Share icon
Return Policy
Returns are easy at Boatplicity

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy