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Sierra 18-5107-1 Marine Ignition Module for GM Delco HEI Distributors

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

118-5107-1
06/03/2036 6:11 PM
Sale Price

$113.27

1 left at this price

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Usually delivered within 2 days

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No Hassle Returns

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Fitment guaranteed

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Product Details

The Sierra 18-5107-1 is a premium aftermarket ignition module designed for marine applications with GM-based engines equipped with Delco Electronic Spark Timing (EST) and High Energy Ignition (HEI) distributors. This module is engineered to deliver reliable spark control for 4-cylinder, V-6, and V-8 marine engines, ensuring dependable starting and smooth operation in harsh marine environments.

Key Features:

  • Direct replacement for Delco electronic ignition distributors (pre-2002 models)
  • Compatible with Mercury, MerCruiser, OMC, Volvo Penta, and Crusader marine engines
  • Fits 4, 6, and 8 cylinder GM-based marine engines
  • Meets or exceeds OEM specifications for quality and performance
  • Precision-engineered for reliable ignition timing control

Replaces OEM Part Numbers: MerCruiser 811637001, 811637T, 811637, 802464, 850487, 811637002, 804412; OMC 3854003; Volvo Penta 3854003; Crusader 7243110; Mallory 9-29800; GLM 73190; Marine Power 483002; Pleasurecraft Marine R116014. Also replaces Sierra 18-5106 and 18-5107.

Sierra aftermarket parts are manufactured to meet or exceed original equipment standards, providing boat owners with a cost-effective, high-quality replacement solution for critical ignition system components.

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Quick and easy, good prices as well!

Great experience and order arrived quickly.

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Xmas gift for my grand-daughter. Opened and one of the exhaust tips was/is dented.

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