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Sierra 18-9554-5 15W-40 Premium Blend Engine Oil 5 Gallon Pail

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

18-9554-5
06/03/2036 7:35 AM
Sale Price

$167.43

In Stock (10)

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Usually delivered within 2 days

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Product Details

The Sierra 18-9554-5 is a premium blend 15W-40 multi-grade engine oil designed specifically for marine and recreational vehicle applications. This high-quality motor oil provides excellent protection across a wide temperature range, making it ideal for 4-stroke inboard and stern drive engines.

Key Features:

  • SAE 15W-40 viscosity grade for optimal performance in varying temperatures
  • Premium blend formulation combines synthetic and conventional base oils
  • 5-gallon pail provides economical bulk quantity for multiple oil changes
  • Excellent wear protection for high-performance marine engines
  • Superior thermal stability and oxidation resistance
  • Helps prevent sludge and varnish buildup

Important Application Notes:

  • Designed for diesel and 4-stroke gasoline marine engines
  • Suitable for inboard ski boats and stern drive applications
  • Not for use in gasoline engines equipped with catalytic converters
  • Meets or exceeds API performance standards for marine use

This bulk 5-gallon container is perfect for marine service professionals, boat owners with multiple vessels, or those who prefer the convenience and value of larger quantity packaging. Sierra marine lubricants are formulated to meet the demanding requirements of the marine environment, providing reliable engine protection for recreational and commercial applications.

great!!!

Awesome but I wish I could shop without entering a car make and model.

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fast shipping awesome cant wait for my product not my 1st purchase always good service<br>

Best price on the Internet.

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