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Power Pack (CDI Module) – Fits Johnson/Evinrude 65-300 HP (Replaces 582285, 584783, 18-5763)

Regular price $99.99

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If the return is due to our error or a defective item, we’ll make it right.


Please contact us before returning any item.

Delivery and Shipping

Orders are typically processed within 1–2 business days.


U.S. orders usually arrive within 6–15 days, depending on stock location and destination.


International delivery times may vary due to customs processing.


Tracking information will be provided once your order ships.

If you have any questions, feel free to email us at info@seasierra.com, and we’ll get back to you within 20–36 hours.

Product Details

This aftermarket Power Pack (CDI Module) is engineered to restore ignition performance on a range of Johnson/Evinrude V4 and V6 outboard engines from the 1990s to the early 2000s, typically found on 65-300 HP 2-stroke models.

It serves as a direct replacement, providing an interchange for OEM part numbers 582285, 584783, 396141, and others, ensuring a reliable fit and function for your ignition system.

  • Designed for simple plug-and-play installation with direct-fit connectors.
  • Restores spark and timing functions to factory specifications.
  • Engineered for marine environments.

Part Number Matrix

Use this matrix to compare equivalent references across OEM and aftermarket listings. Verify the number on your original unit before ordering.

Brand Part Number
OEM (Johnson/Evinrude) 582285
OEM (Johnson/Evinrude) 584783
OEM (Johnson/Evinrude) 396141
OEM (Johnson/Evinrude) 582281
OEM (Johnson/Evinrude) 582502
OEM (Johnson/Evinrude) 582787
Sierra 18-5763
Sierra 18-5765

Engine & Model Compatibility

Confirm your engine model, year, and original power-pack number before purchase. This power pack is intended for a wide range of Johnson and Evinrude V4 and V6 2-stroke outboards.

Brand Model Rated HP Stroke OEM Part No.
Johnson/Evinrude Various V4 65-140 2-Stroke 582285, 584783
Johnson/Evinrude Various V6 150-300 2-Stroke 582285, 584783

Technical Specs

Product Type
Power Pack (CDI Module)
Installation
Direct plug-and-play replacement
Connection
Direct-fit plug connectors
Application
Johnson/Evinrude 2-stroke outboard ignition systems
Construction
Aftermarket marine replacement component

What’s in the Box

  • 1 x Power Pack/CDI Module

Installation Notes

  1. Disconnect the battery terminals to prevent electrical shorts.
  2. Locate the existing power pack on the engine block and note the routing of all wires.
  3. Carefully unplug all connectors from the old power pack.
  4. Unbolt and remove the old unit from the engine.
  5. Mount the replacement power pack in the same location and fasten it securely.
  6. Firmly connect the plugs to the replacement module, matching them to their original positions.
  7. Reconnect the battery terminals.
  8. Start the engine and test for proper operation, including consistent spark and smooth idling.

Troubleshooting & FAQ

How do I know if my power pack has failed?

Common symptoms include no spark on one or more cylinders, intermittent or weak spark, engine misfiring—especially at high RPM—backfiring, or a complete failure to start. Testing with a DVA meter can help confirm whether the power pack output is within the specified range.

What is the difference between a power pack and a CDI module?

The terms are often used interchangeably. “Power Pack” is a common name for the Capacitor Discharge Ignition (CDI) module used in many Johnson and Evinrude outboards. This component is part of the ignition system and controls the delivery of ignition energy and spark timing.

Is special timing or adjustment needed after installation?

This is a direct plug-and-play replacement designed to match the applicable OEM ignition system. In most cases, no timing adjustment is necessary. Follow the engine service manual and verify ignition timing with a timing light after installation when required.

Is this OEM or aftermarket?

This listing is for an aftermarket replacement, not an OEM component. It is intended to provide comparable fit and function for the listed applications.

What are the shipping options?

Standard shipping is free, with typical transit of 5–15 days. Expedited options are shown at checkout where available.

What are the warranty and return terms?

The product is covered by a 1-year warranty against manufacturing defects under normal use. Returns are accepted within the standard return window when the item is unused and in its original condition. Contact support for return instructions.

Safety & Important Information

  • Verify the original part number, connector layout, engine model, year, and specifications before ordering.
  • Do not install the component if the connectors or mounting arrangement differ from your original part.
  • This is an aftermarket replacement, not an OEM component.
  • Professional installation is recommended for safe and reliable operation.

About Sea Sierra

  • Pro-Grade Standards — We supply marine parts engineered for dependable performance in real-world conditions.
  • Fast Global Fulfillment — Free standard delivery is available to most regions, typically within 5–15 days.
  • Manufacturer-Direct Value — Fair pricing without compromising on materials or quality control.

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