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Sierra 18-6015-9 Zinc Anode for MerCruiser Bravo Sterndrives (Pack of 2)

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

18-6015-9
08/06/2036 11:55 PM
Sale Price

$11.84

1 left at this price

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Usually delivered within 2 days

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Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Sierra 18-6015-9 is a zinc sacrificial anode designed to protect MerCruiser sterndrive components from galvanic corrosion. Sold as a pack of 2 anodes, this is a direct replacement for Mercury Marine OEM parts. Zinc anodes are formulated specifically for saltwater use, where they attract corrosive electrochemical activity away from shafts, propellers, rudders, and drive components — allowing the anode to corrode instead of your valuable drive parts.

Sierra International manufactures this anode to meet OEM specifications, making it a reliable and cost-effective alternative to the original Mercury Marine part.

Key Features:

  • Pack of 2 zinc sacrificial anodes
  • Zinc alloy construction — designed for saltwater use
  • Protects MerCruiser sterndrive components from galvanic corrosion
  • Manufactured to OEM specifications
  • Direct OEM replacement — no modifications required

OEM Cross-Reference Numbers:

  • Mercury Marine: 55989A3, 55989Q9, 55989T9
  • Also replaces: 47-6015-9, 47-60159, 47-6015, GLM12700, 18-6015
  • UPC: 808282189488

Note: Zinc anodes are intended for saltwater environments only. For brackish water, choose an aluminum alloy anode. For freshwater use, select a magnesium alloy anode.

Product got here quickly in great shape! Autoplicity does things right!

It was ease and simple.

thank you, quick easy. Great prices!

Good so far

Quick service. keeps you up to date

So far so good

I hope this time there will be no problem or cancellation of my order from your end, as I confirmed the stock from your sale department personnel (Hector) before I proceed on checking out.

Ordering went smooth!

Great price. Easy to use site and placing orders are a breeze! Overall very pleased.

Very easy and quick

easy checkout

Fast shipping and saved $60 on a $399 item. However you have to verify your part #'s with the vendor. The part discription on autoplicity sometimes is not what you get. I ordered an item that said it was an O2 plug and bung but when it showed up it was just the bung plug sold separate and customer service basically said it was my bad for not checking for a more accurate discription on the Allstar web site.

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