Sierra Power Pack Kit 18-99170 for Johnson/Evinrude 4 Cyl 1995-2006 80 JET, 90, 100, 105 Comm, 115 HP

The Sierra 18-99170 Power Pack Kit is a digital optical ignition upgrade for 4-cylinder Johnson/Evinrude outboards. It is designed as a direct upgrade for the ignition system on 1995-2006 4-cylinder engines, replacing the original power pack with a digital optical unit for more consistent spark timing and reliable starting. The kit is a complete package rather than a single part, and includes the power pack along with the additional components needed to complete the ignition upgrade, so the correct mating hardware is on hand at install time.

This kit fits 1995-2006 Johnson/Evinrude 4-cylinder outboards, including 80 JET, 90, 100, 105 Comm, and 115 HP models. It replaces several original Johnson/Evinrude part numbers, making it a straightforward swap for boat owners whose original power pack has failed or is due for a reliability upgrade. Buyers should confirm the exact engine model and original part number before ordering to ensure correct fitment.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-99170
• Product Dimensions: 7 x 9 x 2.5 inches
• Weight: 1.92 pounds
• UPC: 808282393717
• Ignition Type: Digital Optical
• Cylinder Configuration: 4 Cylinder

Fitment

• Johnson/Evinrude 4 Cylinder, 1995-2006: 80 JET, 90, 100, 105 Comm, 115 HP

Replaces (OEM)

• 765386
• 586015
• 586098
• 586292

Frequently Asked Questions

What engines does the Sierra 18-99170 power pack kit fit? The Sierra 18-99170 kit fits 1995-2006 Johnson/Evinrude 4-cylinder outboards, specifically the 80 JET, 90, 100, 105 Comm, and 115 HP models.

What OEM part numbers does this kit replace? Kit 18-99170 replaces original Johnson/Evinrude part numbers 765386, 586015, 586098, and 586292.

How much does the 18-99170 power pack kit weigh? It weighs 1.92 pounds.

What are the dimensions of this power pack kit? The kit measures 7 x 9 x 2.5 inches as packaged.

Is this a digital or analog ignition upgrade? Sierra 18-99170 is a digital optical power pack, an upgrade over the original analog-style ignition module on these Johnson/Evinrude 4-cylinder engines.

Does the kit include everything needed for installation? Yes, 18-99170 is sold as a complete kit with the power pack and the additional components required to complete the ignition upgrade, not just a single loose part.

Will this work on a 2-cylinder or V6 Johnson/Evinrude motor? No, the 18-99170 kit is designed specifically for 4-cylinder Johnson/Evinrude outboards in the 1995-2006 80 JET, 90, 100, 105 Comm, and 115 HP range.

Can I use my original OEM part number to confirm fitment before ordering? Yes, cross-check your engine's original part number against 765386, 586015, 586098, or 586292, which the 18-99170 kit is built to replace.

Why upgrade to a digital optical power pack instead of replacing with the original style? The 18-99170 digital optical design gives more consistent ignition timing and reliability compared to the original power pack it replaces on these 4-cylinder Johnson/Evinrude engines.

What is included in the box with the 18-99170 kit? The kit includes the power pack unit along with the additional mounting and wiring components needed to complete the ignition upgrade on the 4-cylinder Johnson/Evinrude engines it fits.