Sierra Voltage Regulator/Rectifier 18-99436 for Johnson/Evinrude Outboards, 20-Amp, Cross-References CDI Electronics 193-4847

The Sierra 18-99436 is a 20-amp voltage regulator/rectifier engineered for Johnson and Evinrude outboard motors. It manages the outboard's charging system by converting the alternating current produced by the stator into direct current and regulating output voltage to protect the battery and onboard electronics from overcharging. As a direct-fit electrical component, it is a straightforward swap for a failed or worn factory regulator/rectifier, restoring reliable charging performance without rewiring the ignition or charging harness.

This unit is built to handle the 20-amp charging demand common to Johnson/Evinrude outboard charging systems, making it suitable for boaters who need dependable voltage control to keep batteries properly charged during operation. It corresponds to CDI Electronics part number 193-4847, giving buyers a clear cross-reference point when searching for the correct replacement.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-99436
• Product Type: Voltage Regulator/Rectifier
• Amperage: 20 Amp
• Application: Johnson/Evinrude Outboard Motors
• Weight: 1 pound
• UPC: 808282394677

Fitment

Designed for Johnson and Evinrude outboard motors requiring a 20-amp voltage regulator/rectifier.

Replaces (OEM)

• CDI Electronics 193-4847

Frequently Asked Questions

What is the Sierra 18-99436 used for? It is a voltage regulator/rectifier that converts the alternating current from a Johnson or Evinrude outboard's stator into direct current and regulates charging voltage to protect the battery and electronics.

What amperage does this regulator/rectifier support? The Sierra 18-99436 is rated for 20 amps of charging output.

Does the Sierra 18-99436 fit Johnson and Evinrude outboards? Yes, this regulator/rectifier is built for Johnson and Evinrude outboard motors that use a 20-amp charging system.

Is Sierra 18-99436 the same as CDI Electronics 193-4847? Sierra 18-99436 cross-references to CDI Electronics part number 193-4847, so either number identifies a compatible unit for the same application.

How much does this part weigh? The Sierra 18-99436 voltage regulator/rectifier weighs 1 pound.

What is the UPC for the Sierra 18-99436? The UPC for this Johnson/Evinrude voltage regulator/rectifier is 808282394677.

Will this replace a failed factory voltage regulator? Yes, the Sierra 18-99436 is intended as a direct replacement for a worn or failed voltage regulator/rectifier on compatible Johnson/Evinrude outboards.

What happens if a voltage regulator/rectifier fails on an outboard? A failed regulator/rectifier like the one the Sierra 18-99436 replaces can cause overcharging or undercharging of the battery, leading to battery damage or electrical system issues.

Is this a genuine Sierra part? Yes, part number 18-99436 is a Sierra brand voltage regulator/rectifier.

Does the Sierra 18-99436 include mounting hardware? The listing covers the voltage regulator/rectifier unit itself, identified by Sierra part number 18-99436.