2 Cylinder Power Pack – Fits Johnson Evinrude 4HP 5HP 6HP 8HP 9.9HP 10HP 15HP 20HP 25HP 28HP 30HP 35HP 40HP 45HP 48HP 50HP 55HP 60HP (Replaces 584783, 586798, 113-4783)

Product Details

This 2 Cylinder Power Pack is an aftermarket replacement designed for Johnson and Evinrude outboard motors ranging from 4HP to 60HP. Compatible with a wide range of models manufactured between 1985 and 2003, this power pack delivers reliable ignition control for 2-cylinder applications across manual start, electric start, and commercial configurations.

This unit directly replaces OEM part numbers 584783, 586798, and 113-4783, along with numerous other factory equivalents including 396141, 582285, 584908, 584708, 582502, 586800, 582787, 583169, 583170, 582880, 583604, 582281, 583167, 586697, 583168, and aftermarket references 18-5763 and 18-5765.

• Direct plug-and-play installation with factory-style connectors
• Meets or exceeds OEM specifications for ignition timing and output
• Suitable for freshwater and saltwater marine environments

Part Number Matrix

Use this matrix to confirm equivalent references across OEM and aftermarket.

Engine & Model Compatibility

Confirm your engine model/year in the table below.

Technical Specs

Type

2 Cylinder Power Pack

Application

Johnson / Evinrude Outboard Motors

Cylinder Configuration

2 Cylinder

Horsepower Range

4HP – 60HP

Year Range

1985 – 2003

Installation Type

Direct plug-and-play replacement

What's in the Box

• 1 × Power Pack

Installation Notes

1. Disconnect the battery and ensure the ignition is off before beginning work.
2. Locate the existing power pack on your engine, typically mounted near the ignition coils.
3. Disconnect all electrical connectors from the old power pack, noting their positions.
4. Remove the mounting fasteners securing the old unit to the engine block.
5. Position the new power pack in the same orientation and secure with original or equivalent hardware.
6. Reconnect all electrical connectors, ensuring a firm, clean connection at each terminal.
7. Reconnect the battery and test the ignition system for proper spark on all cylinders.
8. Verify engine starts smoothly and runs without misfires across the RPM range.

Troubleshooting & FAQ

How do I know if my power pack has failed?

Common symptoms include no spark on one or both cylinders, intermittent misfires, difficulty starting, or complete ignition failure. Test spark output at each plug wire with the engine cranking; inconsistent or absent spark often points to power pack failure.

Will this work on a 3-cylinder engine?

No. This power pack is designed exclusively for 2-cylinder Johnson and Evinrude motors. Installing it on a 3-cylinder engine will result in improper ignition timing and potential damage.

Can I install this myself, or do I need a mechanic?

Installation is straightforward for those comfortable with basic marine electrical work. However, if you're unfamiliar with ignition systems or troubleshooting spark issues, professional installation is recommended to ensure correct timing and safe operation.

What's the difference between this and the OEM part?

This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.

Do I need to reset timing after installation?

In most cases, no. This power pack is calibrated to factory specifications and installs as a direct replacement. However, if you've made other ignition system changes or the engine was previously out of time, a timing check is advisable.

How long does a power pack typically last?

Service life varies based on operating conditions, but power packs generally last several years under normal use. Exposure to moisture, electrical surges, or overheating can shorten lifespan. Proper maintenance and corrosion protection extend durability.

What are typical shipping times and costs?

We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.

What warranty and return options are included?

Covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in original condition). See our policy page or reach out for instructions.

Is this compatible with both manual and electric start models?

Yes. This power pack is used across manual start, electric start, and commercial configurations for the horsepower and year ranges listed in the compatibility table.

Safety & Important Info

• Verify images/specifications against your original part. If anything differs—even if your model appears compatible—do not purchase.
• This is an aftermarket replacement, not an OEM component.
• Professional installation is recommended for safety and performance.

About Sea Sierra

• Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
• Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
• Manufacturer-Direct Value — Fair pricing without compromising on materials or QC.