21066-3712 Voltage Regulator for Kawasaki STS 900 2001-2002

Voltage Regulator for Kawasaki

This voltage regulator for Kawasaki keeps the charging system on your personal watercraft stable, replacing worn or failed units and cross-referencing OEM part number 21066-3712.

Overview

This voltage regulator for Kawasaki is a direct replacement component that controls charging output on your watercraft's electrical system. It regulates voltage to the battery and accessories so the engine and electronics run reliably. Designed for riders maintaining a Kawasaki STS 900, it is a practical fix for charging trouble.

Built For Performance

• Regulates charging voltage to protect the battery from overcharging
• Solid-state construction with no moving parts to wear out
• Direct fitment for the OEM regulator mounting location
• Cross-references OEM part number 21066-3712
• Heat-tolerant design suited to engine bay temperatures
• Sealed housing resists moisture typical of marine use

Fits These Machines

• for Kawasaki STS 900, 2001-2002

On-The-Job Use

• Restoring charging output on a PWC that keeps draining its battery
• Replacing a regulator that has failed or stopped holding voltage
• Routine electrical maintenance on a personal watercraft
• Getting a Kawasaki STS 900 back on the water after a charging fault

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 keeps going dead, erratic gauge readings, or dim lights while running. Testing charging output with a multimeter confirms whether the regulator is the culprit.

Q: Does this replace my original regulator directly? A: This unit is built to match the OEM regulator's fitment and function for the listed models. Confirm your machine's year and serial number range 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.