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Sierra 18-9554-2 Premium Blend Heavy Duty Marine Engine Oil 15W-40 1 Quart Case of 12

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

18-9554-2
05/31/2036 11:53 PM
Sale Price

$9.07

In Stock (10+)

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Usually delivered within 2 days

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Live-in-stock inventory

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Product Details

Sierra 18-9554-2 Premium Blend Heavy Duty Engine Oil is specifically formulated for the demanding conditions of heavy-duty inboard marine applications, including cruisers and towboats requiring 15W-40 viscosity. This premium marine engine oil utilizes advanced base stocks and a cutting-edge additive package to deliver superior lubrication technology for diesel marine engines.

Key Performance Features:

  • Meets API Service classification up to CK-4 for modern diesel engines
  • Meets API Service classification SM performance specifications
  • Compatible with fuels of any sulfur content level
  • Engineered for heavy-duty marine inboard diesel applications
  • Premium formulation provides excellent wear protection and engine cleanliness

Compatibility: Replaces and meets specifications for Shell Rotella T4, Delo 400, MerCruiser, Indmar, Pleasurecraft, Crusader, Volvo Penta, and MasterCraft engine oils.

Important: Not for use in gasoline engines equipped with catalytic converters. Sold as a case of 12 quarts only.

Products specifications

Grade

15W-40

Size

Quart

Simple easy to order.

Easy process, cheapest price for this item on the web

Shipping seemed a little pricey for the part but we'll see how fast it actually gets here

So far so good. shipping not too high. I hope everything arrives in good shape.

So far, would do business with again.

hoping

It was easy

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