Sierra 18-99246 Power Pack for Johnson/Evinrude 4-Cyl 65-115 HP Outboards 1989-1997, Replaces 584029

The Sierra 18-99246 power pack is a capacitor discharge ignition (CDI) control module built for Johnson/Evinrude 4 cylinder outboard engines. The power pack manages the ignition timing and spark energy delivered to each cylinder, and it is designed to replace the factory power pack on qualifying 4 cylinder Johnson/Evinrude outboards rated 65, 80, 85, 88, 90, 100, and 115 HP built in the 1989-1997 range.

This power pack is a direct fit for the applicable engines and installs in place of the original unit using the factory wiring harness connections, with no permanent modification to the outboard required. It replaces OEM power pack numbers 584029, 584030, and 583777, so it is a straightforward swap for boat owners whose original power pack has failed or is showing signs of intermittent spark, hard starting, or misfiring.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-99246
• Weight: 0.88 pounds
• Package Dimensions: 7.83 x 4.37 x 2.48 inches
• UPC: 808282394127
• Engine Fitment: Johnson/Evinrude 4 Cylinder, 65, 80, 85, 88, 90, 100, and 115 HP
• Model Years: 1989-1997
• Replaces (OEM): 584029, 584030, 583777

Fitment

• Johnson/Evinrude 4 cylinder outboards, 65, 80, 85, 88, 90, 100, and 115 HP, 1989-1997

Replaces (OEM)

• 584029
• 584030
• 583777

Frequently Asked Questions

What does the Sierra 18-99246 power pack replace? It replaces OEM Johnson/Evinrude power pack numbers 584029, 584030, and 583777, so any of those original part numbers can be swapped for the Sierra 18-99246.

Which outboard engines fit this power pack? The 18-99246 power pack fits Johnson/Evinrude 4 cylinder outboards rated 65, 80, 85, 88, 90, 100, and 115 HP.

What model years does the 18-99246 power pack cover? This power pack covers Johnson/Evinrude 4 cylinder outboards built in the 1989-1997 range.

How much does the Sierra 18-99246 power pack weigh? The power pack weighs 0.88 pounds.

What are the package dimensions of the 18-99246 power pack? It ships in a package measuring 7.83 x 4.37 x 2.48 inches.

Will this power pack work on a 6 cylinder Johnson/Evinrude outboard? No. The Sierra 18-99246 is built specifically for 4 cylinder Johnson/Evinrude outboards in the 65-115 HP range, not 6 cylinder engines.

Is the 18-99246 an OEM or aftermarket power pack? The Sierra 18-99246 is an aftermarket replacement power pack engineered to replace the original Johnson/Evinrude units 584029, 584030, and 583777.

Does the 18-99246 cover the full 65 to 115 HP range? Yes, one power pack, the Sierra 18-99246, covers the 65, 80, 85, 88, 90, 100, and 115 HP versions of the applicable 4 cylinder Johnson/Evinrude outboards.

What symptoms indicate my Johnson/Evinrude power pack needs replacing? Hard starting, intermittent spark, or engine misfiring on a 4 cylinder Johnson/Evinrude outboard in the 65-115 HP range can indicate the power pack, such as the Sierra 18-99246, needs replacement.

Does the Sierra 18-99246 use the factory wiring connections? Yes, the 18-99246 power pack is designed to connect using the factory wiring harness on the applicable Johnson/Evinrude 4 cylinder outboards.

What UPC is listed for the Sierra 18-99246 power pack? The UPC for the Sierra 18-99246 power pack is 808282394127.