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Sierra 18-2001 Oil Seal for Johnson Evinrude OMC Outboard

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

18-2001
06/01/2036 9:27 PM
Sale Price

$10.82

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 18-2001 is a premium replacement oil seal designed for Johnson/Evinrude outboard motors and OMC stern drive systems. This precision-manufactured seal meets or exceeds original equipment specifications, ensuring reliable performance and proper sealing protection for your marine engine.

Key Specifications:

  • Outside Diameter: 1.624 inches
  • Shaft Size: 1.125 inches
  • Width: 0.250 inches
  • Meets or exceeds OEM specifications
  • Backed by SeaStar Solutions warranty

OEM Cross References:

  • OMC: 321668, 330137, 310600, 313398, 317761, 321463
  • Johnson/Evinrude: 0330137, 310600, 313398, 317761, 321463, 321668
  • GLM: 86030
  • Mallory: 9-76212
  • Seloc: 55-027

Sierra Marine engine parts are engineered to provide dependable service in demanding marine environments. This oil seal is compatible with multiple Johnson, Evinrude, and OMC applications, making it a versatile replacement part for marine professionals and boat owners.

REALLY HARD ITEM TO FIND VERY SATISFIED

fast to find my part

Great price and fast shipping. Good experience!

seamless...

quick and easy

Easy to use website!

great so far

Smooth transaction

The item could have more pictures from different sides and dimensions.

Awesome dealer for auto-parts. Fast shipping and they sell good products at great prices! Bought set of club racing brake pads for $15 less than anywhere else on a Saturday and they were here the following Wednesday. I'm in Memphis and it was the week before Christmas. I was very impressed and pleased!

Yaaay

The site does not inspired confidence due to the current look and feel. However the delivery was fast and the issue with ordering was resolved in matter of days. The only down side was that on of the parts did not match the original part of my vehicle. As

Item arrived in good condition and in a timely manner.

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