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Sierra RK40100 Illuminated Rocker Switch Off-On 20 Amp 12V

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

RK40100
06/01/2036 1:57 PM
Sale Price

$13.43

In Stock (10+)

delivery box

Usually delivered within 2 days

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No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Sierra RK40100 is a heavy-duty illuminated rocker switch designed for marine and automotive applications. This reliable switch features non-corrosive plastic construction with silver contacts and brass blade terminals for superior conductivity and long-lasting performance in harsh environments.

Key Features:

  • Rated 20 amps at 12VDC for high-current applications
  • Non-corrosive plastic housing resists moisture and salt exposure
  • Silver contacts provide excellent electrical conductivity
  • Brass blade terminals ensure secure, corrosion-resistant connections
  • Dependent pilot light illuminates when switch is in the ON position
  • Fits cutout dimensions: 0.830" x 1.45"
  • Compatible with panels up to 0.187" thick
  • Simple Off-On switching operation

This illuminated rocker switch is ideal for controlling navigation lights, bilge pumps, electronics, and other 12-volt DC circuits on boats, RVs, and vehicles. The integrated pilot light provides clear visual confirmation of switch status, even in low-light conditions.

Products specifications

Positions

Off/On

Terminals

3 Blade

Type

SPST

staff was very helpful and pricing is second to none! i highly recommend them for all your parts needs!

Quick and easy.

beating rockauto

You have it in stock not like most sites that advertise only to tell you it's not available but had wrong length on the cross bar

Great to deal with both online and over the phone. Buy with confidence.

Typical. No issues...

Where others couldn't deliver Autoplicity could. I went through two other supplier who kept changing the ship date. Autoplicity had it in stock and shipped the next day.

I hope these are in stock:)

Best price I could find on Thermo-tec for the Corvette! Real quick ship too!!

So far so good.

Good prices

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