Sierra 18-99234 Power Pack for Johnson/Evinrude 6-Cylinder Outboards, 150-235 HP 1985-1987, Replaces 582651 763792

The Sierra 18-99234 Power Pack is an ignition power pack built for Johnson/Evinrude 6-cylinder outboard engines. It supplies the ignition energy that fires the spark plugs in sequence, and is designed as a direct functional replacement for the original equipment power pack on covered 1985-1987 6-cylinder Johnson/Evinrude models. The power pack is air cooled and operates on a 12 volt DC electrical system, with a minimum input voltage of 10.5 volts DC, and uses a Johnson/Evinrude specific connector for a plug-and-play style installation without rewiring the engine harness. Installing a power pack that is worn, weak, or failing is a common fix for hard starting, misfiring, stalling, or a complete no-spark condition on these outboards. The Sierra 18-99234 is intended for boat owners and marine technicians servicing 1985-1987 Johnson/Evinrude 6-cylinder 150, 155, 175, 185, and 235 HP outboards, and it replaces OEM power pack numbers 582651 and 763792.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-99234
• Product Type: Power Pack
• Compatible Engines: Johnson/Evinrude 6 Cylinder outboards, 150, 155, 175, 185 and 235 HP (1985-1987)
• Wattage: 800 watts
• Cooling Method: Air
• Maximum Input Voltage: 12 Volts (DC)
• Minimum Input Voltage: 10.5 Volts (DC)
• Connector Type: Johnson/Evinrude specific
• Item Dimensions: 5 x 4 x 2 inches
• Weight: 0.7 pounds
• UPC: 808282394004

Fitment

• Johnson/Evinrude 6 Cylinder outboards, 150, 155, 175, 185 and 235 HP, 1985-1987

Replaces (OEM)

• 582651
• 763792

Frequently Asked Questions

What engines does the Sierra 18-99234 power pack fit? The Sierra 18-99234 fits Johnson/Evinrude 6-cylinder outboard engines rated 150, 155, 175, 185, and 235 HP from 1985-1987.

What OEM part numbers does the 18-99234 replace? It replaces OEM Johnson/Evinrude power pack numbers 582651 and 763792.

Is the 18-99234 a direct replacement, or does it require rewiring? The Sierra 18-99234 uses a Johnson/Evinrude specific connector, so it is designed to connect to the existing engine harness on covered 1985-1987 6-cylinder models without modification.

How many volts does the 18-99234 power pack run on? It operates on a 12 volt DC system, with a minimum input voltage of 10.5 volts DC.

Is the Sierra 18-99234 air cooled or liquid cooled? The 18-99234 power pack is air cooled.

What is the wattage rating of the 18-99234 power pack? 800 watts is the rated wattage of the Sierra 18-99234 power pack.

What are the physical dimensions of the 18-99234? The unit measures 5 x 4 x 2 inches.

How much does the Sierra 18-99234 weigh? The Sierra 18-99234 power pack weighs 0.7 pounds.

What symptoms indicate my outboard's power pack needs replacement? Hard starting, misfiring, stalling, or a no-spark condition on a 1985-1987 Johnson/Evinrude 6-cylinder outboard are common signs the power pack, such as the Sierra 18-99234, needs replacing.

Does the 18-99234 come as a single unit? Yes, the Sierra 18-99234 power pack ships as a single unit.

Will the 18-99234 work on 4-cylinder Johnson/Evinrude outboards? No, the Sierra 18-99234 is built for 6-cylinder Johnson/Evinrude outboards rated 150-235 HP, not 4-cylinder engines.

What is the UPC for the Sierra 18-99234? The UPC for the Sierra 18-99234 power pack is 808282394004.