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Sierra 118-99313 Ignition Power Pack for Johnson/Evinrude Outboards

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

118-99313
06/02/2036 9:01 AM
Sale Price

$124.54

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Usually delivered within 2 days

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Product Details

The Sierra 118-99313 is a replacement ignition power pack designed for Johnson and Evinrude 2-stroke outboard engines. Also known by the OEM cross-reference number 18-99313, this power pack serves as a critical component of the capacitor discharge ignition (CDI) system, storing and releasing electrical energy to fire the ignition coils at precisely the right moment for reliable engine starting and smooth operation.

Sierra's ignition power packs are manufactured to meet or exceed original equipment manufacturer (OEM) specifications, providing a dependable, cost-effective alternative to factory parts. Designed for the demands of the marine environment, this unit is built to resist moisture, vibration, and heat — conditions common to outboard motor use.

Key Features:

  • Direct OEM replacement — cross-references to Johnson/Evinrude part number 18-99313
  • Capacitor discharge ignition (CDI) power pack for 2-stroke J/E outboard motors
  • Meets or exceeds OEM performance specifications
  • Built to withstand marine conditions including moisture, vibration, and heat
  • Restores proper ignition timing and engine starting performance
  • Reliable aftermarket alternative from Sierra, a trusted marine parts brand

If your Johnson or Evinrude outboard is experiencing ignition failures, hard starting, misfires, or no-spark conditions, a faulty power pack is a common cause. Replacing it with the Sierra 118-99313 is a straightforward repair that can restore full ignition system performance.

Was easy transaction and fast shipping.

Very good so far

Had the part I needed. Great price and fast delivery

Very easy!!

Checkout UI was weird, and made me scroll through stuff just to checkout.

Thank you for this item at this price.

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