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Sierra 18-0570 Yamaha Crankshaft Oil Seal 23x38x7mm (OEM 93102-23096-00)

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

18-0570
08/04/2036 7:18 PM
Sale Price

$9.77

1 left at this price

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Usually delivered within 2 days

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Fitment guaranteed

Product Details

The Sierra 18-0570 is a precision-engineered crankshaft oil seal designed as a direct aftermarket replacement for Yamaha outboard and marine engines. This seal replaces OEM Yamaha part number 93102-23096-00 and is manufactured to meet or exceed original equipment specifications.

Oil seals play a critical role in engine reliability by retaining lubrication at the crankshaft and preventing the ingress of water, dirt, and debris into sensitive rotating components. The 18-0570 features a compact 23 x 38 x 7mm profile, making it a direct-fit replacement that requires no modification during installation.

Key Features:

  • Direct replacement for Yamaha OEM part 93102-23096-00 (also referenced as 931022309600)
  • Seal dimensions: 23mm inner diameter x 38mm outer diameter x 7mm width
  • Designed to prevent oil leakage and protect the crankshaft from contamination
  • Built to withstand the demanding conditions of marine engine operation
  • Manufactured by Sierra, a trusted name in marine replacement parts

Sierra International is a leading supplier of marine engine parts, offering reliable aftermarket components for Yamaha, Mercury, OMC, and other major marine engine brands. The Sierra 18-0570 is the ideal solution for technicians and boat owners performing crankshaft seal service on compatible Yamaha engines.

Great pricing and ship rates, name brand items. Very impressed. Would definitely buy again.

Easy to Navigate and great prices

I could not find this part and I needed help so I called in . A gentleman named Hector helped me out and made things easier for me.

great and reliable

I found what I wanted easily and the process was quick and easy.

Good price, didn't see a place to put in coupon

My son found the headlights he wanted and checking out was a breeze.

GREAT PRICES AND COMMUNICATION!!!! HIGHLY RECOMMENDED STAFF AND PRODUCTS!!!!!

Great prices, but the checkout process was a little clunky

Good service, great products and quick shipping. I received a good shipping discount using Google payment. Only problem was the item was shipped to my billing address instead of my shipping address.

Good And Quick

Very good

Wish you could change how many your getting when your checking out.

The prices were affordable and of good quality,I will order from them Autoplicity again.

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