My Account
Shopping Cart

Sierra 18-2013 Marine Oil Seal Replaces Mercury 26-16977

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

18-2013
08/07/2036 10:04 AM
Sale Price

$16.81

In Stock (10+)

delivery box

Usually delivered within 2 days

Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Sierra 18-2013 is a high-quality replacement oil seal designed for Mercury Marine engines and MerCruiser stern drives. Engineered to meet or exceed OEM specifications, this seal provides a reliable, leak-free fit as a direct replacement for Mercury Quicksilver part number 26-16977.

Key Features:

  • Direct OEM replacement for Mercury Marine and MerCruiser stern drive applications
  • Shaft Size: 0.875"
  • Outer Diameter (O.D.): 1.250"
  • Manufactured to meet or exceed original equipment standards for long-lasting performance
  • Also used in MerCruiser outdrive lower seal assemblies

Replaces / Cross-Reference Part Numbers:

  • Mercury / Quicksilver: 26-16977, 26-20465, 26-31507, 26-79884, 802276
  • Mallory Marine: 9-76203, 9-76108
  • GLM: 85040
  • SEI Marine: 94-102-01

Sierra International is a trusted manufacturer of aftermarket marine parts, supplying quality components for outboard motors, stern drives, and inboard engines. The Sierra 18-2013 oil seal is a reliable choice for routine maintenance or rebuild of Mercury Marine and MerCruiser drive systems.

My name was mispelled on order confirmation but spelled correctly when autoplicity wants me to rate their site, wierd.

Very easy

easy to order

Your web page was great. I would of liked a better description of the product or a side view . Have some questions but I'll have to answer them when I get the wheel. It does tho look like what I'm looking for. Your price was excellent with free shipping

You sent me an email, with 30offtshipping code. Not sure if it worked.

Thanks

Quick and easy

It was cool

I enjoyed the quick and simple the checkout process

Great experience, fast and easy.

Share icon
Return Policy
Returns are easy at Boatplicity

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy