21066-3718 Voltage Regulator for Kawasaki Ultra 300X 1500 2011-2013

Voltage Regulator for Kawasaki Ultra 300X 1500

This voltage regulator for Kawasaki keeps charging voltage steady on 2011-2013 Ultra 300X 1500 watercraft, cross-referenced to OEM 21066-3718.

Overview

This voltage regulator is a direct-fit replacement for the charging system on the Kawasaki Ultra 300X 1500. It controls alternator output so the battery stays charged and the electrical system runs at a stable voltage. Built for riders maintaining or restoring a 2011-2013 model, this regulator for Kawasaki gets the charging circuit back to spec.

Built For Performance

• Regulates charging output to protect the battery and electrical components
• Cross-referenced to OEM part number 21066-3718 for confident matching
• Solid-state construction with no moving parts to wear out
• Sealed housing resists moisture and vibration in marine use
• Direct mounting to the stock location with factory-style connectors
• Designed to handle the charging load of the 1500 engine platform

Fits These Machines

• for Kawasaki Ultra 300X 1500, 2011-2013

On-The-Job Use

• Replacing a failed or weak regulator on a personal watercraft
• Restoring proper charging on a battery that keeps draining
• Routine electrical maintenance on 2011-2013 Ultra 300X models
• Getting a stored or seasonal watercraft back on the water

Specs At A Glance

Good To Know

Q: How do I know if my regulator has failed? A: Common signs include a battery that will not hold a charge, dimming or flickering lights, and voltage readings outside the normal range. Testing the charging output with a multimeter confirms whether the regulator is the cause.

Q: Is this an original Kawasaki part? A: This is an aftermarket voltage regulator for Kawasaki that cross-references OEM number 21066-3718. Verify your model and part number before ordering.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.