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Sierra 118-9241 Outboard Maintenance Kit for Mercury 40, 50 & 60 HP

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

118-9241
06/02/2036 3:06 AM
Sale Price

$313.34

In Stock (5)

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Usually delivered within 2 days

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No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Sierra 118-9241 Outboard Maintenance Kit is a comprehensive, all-in-one service solution designed for Mercury 40, 50, and 60 HP outboard engines. Sierra's maintenance kits are engineered to deliver a one-box solution that keeps your outboard running at peak performance and reliability, with every essential component included to complete a full service interval.

Each kit arrives packaged in a premium, full-color Sierra branded box with detailed labels featuring product photography, part information, and a complete listing of box contents—making it easy to verify everything is included before you begin.

Kit Contents (Sierra Part Numbers):

  • Anode | 18-6249A
  • Fuel Filter | 18-7718
  • Thermostat Gasket | 18-0182-9
  • Bolt | 18-2607
  • Impeller | 18-8900
  • Oil Filter | 18-7914
  • Water Pump Base | 18-3445

Key Features:

  • One-box solution for complete outboard service — no hunting for individual parts
  • All components are specifically engineered and matched for compatible Mercury engine models
  • Covers all critical maintenance items at appropriate service intervals
  • Premium Sierra aftermarket quality — meets or exceeds OEM standards
  • Full-color box and labeling for easy parts identification

Sierra is a trusted name with over 58 years of experience as a leading manufacturer of aftermarket marine engine and drive parts. The 118-9241 kit provides all the essential parts needed for scheduled outboard maintenance at a significant savings compared to purchasing each component individually.

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