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Sierra AC12440 Marine Pigtail Adapter 50A to 30A 125/250V Male to 125V Female

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

AC12440
06/13/2036 8:51 AM
Sale Price

$154.29

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Product Details

The Sierra AC12440 pigtail adapter enables connection between a 50-amp 125/250V dockside receptacle (SS2-50P male plug) and a 30-amp 125V boatside inlet (L5-30R female connector). This heavy-duty adapter is engineered specifically for the demanding marine environment, allowing boaters to connect to shore power configurations that don't match their vessel's inlet.

Key Features:

  • 50A 125/250V male plug (SS2-50P) to 30A 125V female receptacle (L5-30R)
  • 10/3 AWG marine-grade cable for reliable power transmission
  • Yellow PVC cord jacket with maximum UV inhibitors for extended outdoor life
  • STW-rated jacket: 600VAC at 60°C for superior temperature and moisture resistance
  • Nickel-plated brass contacts resist corrosion in saltwater environments
  • Nylon plug body provides high resistance to carbon tracking and impact damage
  • ETL Listed for safety and code compliance

This adapter is ideal for boats with 30-amp 125V shore power systems that need to connect to 50-amp pedestals at marinas. The robust construction ensures reliable performance in wet, salty conditions while the bright yellow jacket provides high visibility on the dock.

Shipped quickly and packaged well

quick and easy

Good products and prices are responsible

Good price- part easily found.

Yall are the only ones with these center caps and I have been looking for 6 months. Thank you

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