Sierra 18-99416 Johnson/Evinrude Regulated Rectifier, Replaces 153-5114, Fits 5-15 HP 4-Stroke Outboards 1993-2000

The Sierra 18-99416 is a regulated rectifier built as a direct replacement for Johnson and Evinrude outboard charging systems. It converts the AC output from the stator into regulated DC current to charge the battery while protecting the electrical system from voltage spikes. The unit connects using a three-wire setup with bullet and ring connectors, matching the factory wiring configuration on the engines it fits.

This rectifier regulator fits 4-stroke Johnson/Evinrude outboards with the three-wire replacement connection: 5, 6, 8, 9.9, 10, and 15 HP models from 1993 to 2000. It is a straightforward swap for boaters whose original equipment rectifier has failed or is showing signs of weak charging output, erratic gauge readings, or a battery that will not hold a charge while running.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-99416
• Category: Evinrude Outboard Rectifier Regulator
• Fitment: Johnson/Evinrude 4-stroke outboards, 5, 6, 8, 9.9, 10 and 15 HP, 1993-2000
• Connector Type: Three-wire replacement with bullet and ring connectors
• Product Dimensions: 3 x 3 x 3 inches
• Weight: 0.3 pounds
• UPC: 808282394479

Fitment

• Johnson/Evinrude 4-stroke outboards, 5, 6, 8, 9.9, 10 and 15 HP, 1993-2000

Replaces (OEM)

• 153-5114

Frequently Asked Questions

What does the Sierra 18-99416 rectifier regulator do? It converts AC output from the stator into regulated DC current to charge the battery, and it protects the outboard's electrical system from voltage spikes, on the Johnson/Evinrude engines it fits.

Which outboards fit the Sierra 18-99416? Johnson/Evinrude 4-stroke outboards with the three-wire replacement connection: 5, 6, 8, 9.9, 10, and 15 HP models from 1993 to 2000.

Does the Sierra 18-99416 replace part number 153-5114? Yes, the Sierra 18-99416 is a direct replacement for OEM part number 153-5114.

How does the Sierra 18-99416 connect to the wiring harness? It uses a three-wire replacement connection with bullet and ring connectors, matching the factory harness on compatible Johnson/Evinrude 4-stroke outboards.

What are the dimensions and weight of the Sierra 18-99416? The unit measures 3 x 3 x 3 inches and weighs 0.3 pounds.

What symptoms indicate my outboard's rectifier needs replacing? Weak or erratic battery charging, inconsistent gauge readings, or a battery that will not hold a charge while the engine runs are common signs the rectifier regulator, such as the Sierra 18-99416, has failed.

Will the Sierra 18-99416 fit a 2-stroke Evinrude outboard? No, the Sierra 18-99416 is designed for 4-stroke Johnson/Evinrude outboards using the three-wire replacement connection, in the 5 to 15 HP range for 1993 to 2000.

Is installation of the Sierra 18-99416 a direct swap? Yes, since it uses the same three-wire bullet and ring connector setup as the original equipment, the Sierra 18-99416 installs as a direct replacement on compatible engines.

What is the UPC for the Sierra 18-99416? The Sierra 18-99416 rectifier regulator has UPC 808282394479.

Can the Sierra 18-99416 be used on a 9.9 HP Evinrude from the 1990s? Yes, the Sierra 18-99416 fits 9.9 HP Johnson/Evinrude 4-stroke outboards within the 1993 to 2000 range that use the three-wire replacement connection.