Manufacturer
<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
$14.01
In Stock (10+)
Usually delivered within 2 days
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The Sierra MP78860 is a marine-grade rotary switch featuring a unique ergonomic design with four switch positions: Off-On(L1)-On(L2)-On(L1&L2) in an SPTT configuration. Rated for 20 amps at 12 volts DC, this durable switch is ideal for controlling dual lighting circuits or other marine electrical systems where independent or combined operation is needed.
Key Features:
RotoSwitch has been selected by major boat manufacturers including Bayliner, Chris-Craft, and Wellcraft for production craft, making this an excellent OEM replacement or upgrade switch for marine electrical panels.
Off
On (2)
SPTT
On (1)
Easy shopping, however the confirmation from the warehouse and then the shipment to my home, took a week. For an overall product purchase it's fine, but if you have your car broken and you are waiting for the part, the waiting time is terrible.
Fernando Hernandez O
Your phone kept disconnecting me so I had to order through web, which had internal error as well.
Eric Atkinson
easy and efficient
AL
Lowest price on the part i needed out of anyone online. Incredibly fast shipping, arrived in two days. Don't hesitate to buy from them. I'm now a customer for life.
ionredline
Safe, quick,and easy... thanks.
Damon
emailed you yesterday and received a response shortly afterword.
sean
great pricing, and easy to use web interface!
Alex Berg
As long as this fits my 2015 Evo X ill be happy.
Wes Phelps
Great product and was the cheapest I could find. Easy to order and shipping information e-mailed to me the next day.
amk401
Very good prices. Almost to good to be true
James woosley
Easy
Christina Stagno
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