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Sierra 18-8830-1 Spark Plug Wire Set for MerCruiser 5.7L Stern Drive Engines

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

118-8830-1
07/14/2036 11:48 PM
Sale Price

$79.48

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Product Details

The Sierra 18-8830-1 is a premium spark plug wire set engineered specifically for MerCruiser stern drive engines. This marine-grade ignition wire set is designed to deliver reliable performance in the harsh marine environment while meeting or exceeding OEM specifications.

Key Features:

  • Kevlar core construction for maximum durability and extended service life
  • Durable stainless steel wound conductor for optimal horsepower and engine performance
  • Premium silicone jacketing and boots for superior high-temperature protection
  • Advanced RFI suppression to protect sensitive electronic systems
  • Engineered to withstand the demanding marine environment

Applications:

  • MerCruiser 5.7L Carb MIE stern drives (s/n 0L002003 through 0M316999)
  • MerCruiser 5.7L Competition Ski Gen+ GM (1998 model year, s/n 0L002005 through 0M316999)

OEM Cross References:

  • Replaces Mercury Marine 84-816608Q80
  • Interchangeable with Mallory 9-28024

Sierra has been a trusted name in the marine industry for over 50 years, offering high-quality engine and drive parts that are built to last. This spark plug wire set is backed by Sierra's industry-leading customer satisfaction warranty.

Carl L Scoggins Jr

Best price, free shipping

Fast delivery great prices and received exactly what I wanted.

Easy ordering. Great seller.

Quick service. Only concern was that your check out/payment process seemed clunky. My order went through but I also received emails saying it had failed. I called customer service and they confirmed that the order did process.

Good price and free shipping.

I have had good luck with my purchases so far and will continue to use them

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