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Sierra 18-3716 Prop Nut Kit for OMC Stern Drive & Johnson/Evinrude Outboards

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

18-3716
06/01/2036 8:11 AM
Sale Price

$11.60

In Stock (10+)

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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 18-3716 Prop Nut Kit is a complete propeller hardware replacement kit designed for OMC stern drives and Johnson/Evinrude outboard motors. This essential marine hardware kit ensures secure propeller mounting and proper shaft retention for reliable operation on the water.

Key Features:

  • Complete single propeller nut kit with all necessary components
  • Includes prop nut, cotter pin, and propeller spacer for proper installation
  • Direct replacement for OMC stern drive and Johnson/Evinrude outboard applications
  • Manufactured to OEM specifications for reliable fit and performance
  • Corrosion-resistant materials designed for marine environments

This kit provides everything needed to properly secure a single propeller, replacing worn or damaged propeller hardware. The included cotter pin ensures the prop nut stays securely fastened, while the prop spacer maintains correct propeller positioning on the shaft. Sierra marine parts are known for quality construction and precise fit, making this kit an excellent choice for routine maintenance or emergency repairs.

Products specifications

Application

Johnson/Evinrude, OMC Sterndrive/Cobra

Contents of Kit

Prop Nut 3705 (1), Cotter Pin 3742 (1), Prop Spacer 4228 (1)

OEM Number

J/E 175267

all good

good prices on quality product

Made a hard to find part easy.When I received the part it looked like a return from the tape job on the box. Part looked new but handled in an attempted install way of appearance. I'm sure it'll be fine.

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Awesome service, Great price, Fast shipping.

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