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Sierra 18-6158A Aluminum Anode Kit for MerCruiser Alpha One Gen II

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

118-6158A
06/03/2036 5:11 PM
Sale Price

$89.68

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Product Details

The Sierra 18-6158A is a complete aluminum anode kit designed to provide superior corrosion protection for MerCruiser Alpha One Generation II stern drives (1991 and up). This comprehensive kit includes all necessary anodes to protect critical metal components on your drive unit from galvanic corrosion in marine environments.

Key Features:

  • High-quality aluminum construction for optimal performance and reliability
  • Suitable for brackish, fresh, or salt water applications
  • Complete kit with all mounting hardware, screws, and washers included
  • Bolt-on installation for straightforward replacement
  • Manufactured to meet or exceed OEM specifications
  • Direct replacement for multiple MerCruiser part numbers

What's Included:

This complete anode kit contains all the anodes required for the MerCruiser Alpha One Gen II lower unit, along with new fasteners and hardware necessary for proper installation. Anodes work by directing corrosion away from valuable drive components such as shafts, propellers, and rudders, sacrificing themselves to protect your investment.

Replaces OEM Part Numbers: MerCruiser 888756A1, 888756Q01, 97-888756K01, 97-888756Q03

Note: For optimal corrosion protection, it's recommended to use marine anti-seize lubricant on all fasteners during installation to prevent corrosive locking of bolts.

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This was very quick and pleasant to work with and I will use them again if needed.

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