0584028 CDI Power Pack for Evinrude Johnson 85HP 88HP 90HP 100HP 110HP 112HP 115HP | JLM Marine

CDI Power Pack for Evinrude Johnson 85HP 88HP 90HP 100HP 110HP 112HP 115HP

This CDI Power Pack is engineered for Johnson and Evinrude 4-cylinder outboard engines ranging from 85 HP to 115 HP, covering model years 1989–1998. Designed as a direct replacement for multiple OEM configurations, it delivers reliable ignition performance for mid-range outboards in both recreational and commercial marine applications.

This unit directly replaces OEM part numbers 583773, 584028, 584027, 584029, 777630, as well as aftermarket equivalents from Sierra (18-5770) and CDI Electronics (113-4028). It provides seamless integration with factory wiring harnesses and mounting points.

• Direct fit for Johnson/Evinrude 4-cylinder outboards (85–115 HP)
• Replaces multiple OEM and aftermarket part numbers for broad coverage
• Pre-tested and ready to install

Part Number Cross-Reference

Use this table to confirm equivalent part numbers across OEM and aftermarket brands.

Compatible Engine Models

Confirm your engine model/year in the table below. For Johnson/Evinrude owners, here's a guide to help you identify your engine's serial/model: Johnson Serial Number Guide.

Technical Specifications

Package Contents

• 1 × CDI Power Pack

The package contains all the parts shown in the product images.

Installation Guide

1. Disconnect the battery and ensure the ignition key is removed to prevent accidental electrical discharge.
2. Locate the existing CDI power pack on your engine, typically mounted near the ignition coils or control module.
3. Take a photo of the existing wire harness connections for reference during reassembly.
4. Carefully disconnect all wire harness connectors from the old power pack, noting their positions.
5. Remove the mounting screws or bolts securing the old power pack to the engine bracket.
6. Remove the old power pack and clean the mounting surface to ensure proper contact and grounding.
7. Position the new CDI power pack in the same orientation as the original unit.
8. Secure the new power pack with the original mounting hardware, tightening bolts evenly to manufacturer torque specifications.
9. Reconnect all wire harness connectors to the corresponding terminals, referencing your photo to ensure correct placement.
10. Double-check that all connections are secure and seated fully to prevent intermittent electrical issues.
11. Reconnect the battery and perform a visual inspection for any loose wires or improperly seated connectors.
12. Start the engine and test at idle and under load to confirm proper ignition timing and smooth operation.

Troubleshooting & FAQ

How do I confirm this CDI power pack fits my engine?
Match your engine's horsepower, year, and cylinder count to the compatibility table above. Then cross-reference your existing part number (stamped on the old unit) with the part numbers listed in the cross-reference section.

What are the symptoms of a failing CDI power pack?
Common signs include engine misfires, rough idling, loss of power under load, difficulty starting, or complete ignition failure. If you experience intermittent spark or cylinders dropping out, the power pack may be the culprit.

Can I test the old power pack before replacing it?
Yes. Use a multimeter to check resistance values at the connector terminals according to your service manual specifications. However, intermittent failures under load may not show up during static testing, so replacement is often the most reliable diagnostic step.

Is this an OEM or aftermarket part?
This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.

How fast do you ship and how much does it cost?
We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.

What is your warranty and return policy?
This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused & in original condition); please see our policy page or reach out for instructions.

Important Notes

• Verify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.
• This product is an aftermarket replacement part and is not an OEM component.
• Professional installation is recommended to ensure safety and optimal performance.

Why Choose JLM MARINE?

• Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
• Fast Global Shipping: Free delivery worldwide in 5–15 days.
• Direct from Manufacturer: Competitive pricing without compromising quality.