21066-3718 Voltage Regulator for Kawasaki Ultra LX 1500 2007-2022

Voltage Regulator for Kawasaki

This voltage regulator for Kawasaki replaces OEM 21066-3718 to keep charging voltage steady on Ultra LX 1500 watercraft from 2007 to 2022.

Overview

This voltage regulator for Kawasaki controls charging output so the battery stays charged and the electrical system stays protected. Built as a direct replacement for OEM 21066-3718, it serves the Ultra LX 1500 platform across a long production run from 2007 to 2022. A practical fix for owners chasing charging problems.

Built For Performance

• Direct replacement for OEM part number 21066-3718
• Holds charging voltage within the range the electrical system expects
• Solid-state design with no moving parts to fail
• Sealed body stands up to water spray and engine compartment heat
• Factory-style connector for straightforward installation
• Rated for the charging demands of the 1500 engine platform

Fits These Machines

• for Kawasaki Ultra LX 1500 (2007-2022)

On-The-Job Use

• Replaces a failed regulator that is not charging the battery
• Used when diagnosing dead battery or warning light issues
• Routine electrical maintenance on higher-hour machines
• Helps shield the ECU and gauges from voltage spikes

Specs At A Glance

Good To Know

Q: How can I tell the regulator has failed? A: Common signs include a battery that will not hold a charge, erratic gauge behavior, or charging voltage outside the normal range. Confirm with a multimeter before replacing.

Q: Is this an original Kawasaki part? A: No, this is an aftermarket replacement built to fit the listed Kawasaki models and cross-references OEM 21066-3718. Compare the part number and connector against your old unit first.

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