21066-3718 Voltage Regulator for Kawasaki Ultra 310R 1500 2014-2021

Voltage Regulator for Kawasaki Ultra 310R 1500

This voltage regulator keeps the charging system on your Kawasaki Ultra 310R 1500 jet ski stable by controlling voltage output to the battery; it is a direct replacement referencing OEM 21066-3718.

Overview

This voltage regulator is a replacement charging system component built for the Kawasaki Ultra 310R 1500 watercraft produced from 2014 through 2021. The regulator manages alternator output so the battery charges correctly and onboard electronics receive steady voltage. It suits riders replacing a failed or weak regulator on their Kawasaki Ultra 310R 1500.

Built For Performance

• Regulates charging voltage to protect the battery from overcharging
• Replacement for OEM part number 21066-3718
• Solid-state construction with no moving parts
• Sealed housing resists moisture and spray exposure
• Designed to match the factory mounting points
• Handles the charging load of the 1500cc engine platform

Fits These Machines

• for Kawasaki Ultra 310R 1500, 2014-2021

On-The-Job Use

• Restoring charging output on a jet ski that drains its battery
• Replacing a regulator that has failed or overheated
• Routine electrical maintenance on the 1500 engine platform
• Keeping instruments and ignition systems powered reliably

Specs At A Glance

Good To Know

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

Q: Is this a direct replacement for part 21066-3718? A: It is offered as a replacement referencing that part number for the listed Kawasaki models and years. Always compare your original part number and connector layout 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.