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CDI Electronics 423-7731 OMC Electronic Shift Assist ESA Adapter Harness

Manufacturer

Cdi Electronics

<h3>Trusted Marine Ignition Solutions Since 1982</h3><p>CDI Electronics has earned its reputation as a leading provider of marine ignition components through decades of hands-on experience and engineering innovation. Founded in 1982 as Rapair Incorporated, the company initially focused on repair services for outboard ignitions, gaining invaluable insight into the most common failure points in marine electrical systems. This diagnostic expertise became the foundation for their product development philosophy when the company began to design, develop and manufacture their own line of replacement ignition components under the brand name of CDI Electronics in 1995.</p><p>Designed and manufactured in Huntsville, Alabama, CDI Electronics products represent a cost-effective alternative to OEM components without sacrificing quality or reliability. The brand's extensive catalog addresses the critical electrical needs of marine engines, from individual replacement parts to complete diagnostic solutions that help technicians troubleshoot complex ignition problems efficiently.</p><h3>Comprehensive Ignition Repair Components</h3><p>The heart of CDI Electronics' product line lies in their <a href="/7290-cdi-electronics-ignition-repair-parts-200570">ignition repair parts</a>, which encompass everything from switch boxes to trigger assemblies. These components are engineered to address the harsh marine environment where corrosion, vibration, and moisture can compromise electrical performance. Their <a href="/7290-cdi-electronics-voltage-regulators-201148">voltage regulators</a> play a crucial role in maintaining stable electrical output across varying RPM ranges, protecting sensitive ignition systems and charging batteries reliably.</p><p>Understanding that a strong spark is fundamental to engine performance, CDI manufactures precision <a href="/7290-cdi-electronics-direct-ignition-coil-10214">direct ignition coils</a> designed to deliver consistent high-voltage output. The brand also produces specialized <a href="/7290-cdi-electronics-alternator-harness-10080">alternator harnesses</a> that connect charging systems while withstanding the temperature extremes and flexing stresses encountered in engine compartments. For marine mechanics working on sterndrive applications, CDI offers specialized <a href="/7290-cdi-electronics-outdrive-tools-200752">outdrive tools</a> that simplify installation and service procedures.</p><h3>Advanced Diagnostic Technology</h3><p>Beyond replacement parts, CDI Electronics has developed the Marine Engine Diagnostic System (M.E.D.S.), an easy-to-use advanced software package specifically developed for troubleshooting marine engines. This diagnostic platform works with most major outboard brands, giving technicians a unified tool for reading engine data, identifying active faults, and running systematic tests. The M.E.D.S. system represents CDI's commitment to not just selling parts, but empowering the marine service industry with professional-grade diagnostic capabilities.</p><p>Whether you're maintaining a tournament bass boat, servicing commercial fishing vessels, or keeping a family runabout running smoothly, CDI Electronics provides the ignition components and diagnostic tools that marine engines depend on. Their products reflect more than four decades of learning what works in real-world marine applications, making them a trusted choice for do-it-yourself boaters and professional marine technicians alike.</p>

Part Number

423-7731
07/13/2036 12:28 AM
Sale Price

$83.97

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Product Details

The CDI Electronics 423-7731 is an Electronic Shift Assist (ESA) adapter harness designed for OMC sterndrive applications. This adapter harness converts a single 5-wire connection to separate 4-pin and 2-pin connectors, enabling proper integration with OMC sterndrive electronic shift assist systems.

Key Features:

  • Adapts single 5-wire connector to 4-pin and 2-pin configuration
  • Designed for OMC sterndrive ESA systems
  • Replaces OEM part numbers 987700 and 987731
  • Essential for electronic distributor conversions and ESA module installations
  • Compatible with Delco HEI coil-in-cap distributors

The ESA system helps prevent engine stalling when shifting into neutral by momentarily retarding ignition timing during gear changes. This adapter harness is critical when upgrading from points-type ignition systems to electronic ignition or when replacing ESA modules on OMC sterndrive engines. CDI Electronics manufactures this harness to meet or exceed OEM specifications for reliable performance.

Very good so far. Very competitive pricing.

easy ordering process, lowest price with free shipping

Could not find the place for the 20% off shipping promotion code.

Just hoping it will work with my car...

real professional

The ordering process was simple and user friendly. The pricing was the lowest I could find for a brand new AMP Powerstep for my Ford F150. The tracking number was provided and the item is scheduled for FedEx ground delivery in 3-days.

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