Sierra Ignition Wire Harness 18-99463, Replaces 584674, Fits Johnson Evinrude 105HP 60 Degree Outboards

The Sierra 18-99463 wire harness is an ignition/electrical harness built for Johnson and Evinrude 105 HP 60-degree outboard engines. It is designed as a direct replacement for the original equipment harness, restoring proper electrical connections between the engine's ignition components after the factory harness becomes worn, corroded, or damaged. The harness uses copper conductors for reliable current flow and long service life in the marine electrical environment. Because it is engineered to the same connection points as the harness it replaces, it allows for a straightforward swap without needing to rework the boat's existing wiring layout.

This harness is intended for Johnson and Evinrude 105 HP JET and JET V/VRO 60-degree outboard applications, covering the model years noted below. Boat owners and marine technicians rely on this part to restore ignition wiring integrity on these specific outboard configurations rather than replacing the entire electrical system.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-99463
• Application: Evinrude Outboard Electrical System
• Material: Copper
• Weight: 1 pound
• UPC: 808282396428

Fitment

• Johnson/Evinrude 105 HP JET, 60 Degree, 1992-1993
• Johnson/Evinrude 105 HP JET V/VRO, 60 Degree, 1994
• Johnson/Evinrude 105 HP JET, 1994

Replaces (OEM)

• 584674

Frequently Asked Questions

What OEM part number does the Sierra 18-99463 harness replace? The Sierra 18-99463 wire harness replaces OEM part number 584674, so it is a direct fit for engines that originally used that harness.

Which outboard engines fit the Sierra 18-99463 harness? This harness fits Johnson and Evinrude 105 HP, 60-degree outboards, including JET models from 1992-1993 and JET / JET V/VRO models from 1994.

Does the 18-99463 harness fit 1994 Evinrude JET V/VRO 105 HP outboards? Yes, the Sierra 18-99463 harness is designed to fit the Johnson/Evinrude 105 HP JET V/VRO, 60-degree outboard for the 1994 model year.

What is the Sierra 18-99463 harness made of? It uses copper conductors, chosen for reliable electrical conductivity in the marine ignition system.

How much does the Sierra 18-99463 wire harness weigh? The harness weighs 1 pound.

Is the Sierra 18-99463 harness a genuine or aftermarket part? Sierra manufactures the 18-99463 harness as a marine aftermarket replacement engineered to fit in place of OEM part 584674.

Will this harness fit a 105 HP model that isn't a JET version? The Sierra 18-99463 harness is confirmed to fit Johnson/Evinrude 105 HP JET and JET V/VRO 60-degree outboards; fitment outside those JET configurations is not specified.

What is included when you order the 18-99463 harness? Ordering the Sierra 18-99463 gets you the wire harness assembly itself, built to replace OEM part 584674.

Can the Sierra 18-99463 harness be installed as a straightforward swap? Yes, since it is built to the same connection points as the OEM 584674 harness it replaces, it installs in place of the original wiring without modification.

What is the UPC for the Sierra 18-99463 harness? The UPC for this part is 808282396428.