RAREELECTRICAL Voltage Regulator Rectifier Compatible With Kawasaki Js650 Jet Ski 650Sx 1988-1991 Jf650 X2 635Cc 2-Stroke 2-Cyl Pwc 12V Replaces 21066-3703 Sh527a-12

KAWASAKI JS650 JET SKI 650SX / JF650 JET SKI X2 — 635cc 2-STROKE PWC: JS650 Jet Ski 650SX 635cc Inline 2-Cyl 2-Stroke Reed Valve CDI Stand-Up PWC (1988-1991) JF650 Jet Ski X2 635cc Inline 2-Cyl 2-Stroke Reed Valve CDI Sit-Down PWC (1988-1991) OEM PART NUMBERS: Kawasaki: 21066-3703 / 210663703 Shindengen: SH527A-12 / SH527A12 1988-1991 Kawasaki Jet Ski 650SX / X2 Voltage Regulator Rectifier: High-quality aftermarket rectifier/regulator for Kawasaki 650cc personal watercraft. The JS650 650SX and JF650 X2 both use a 635cc inline 2-cylinder 2-stroke engine with reed valve induction, twin Mikuni 38mm carburetors, and CDI ignition. The voltage regulator/rectifier is essential for converting raw AC stator output into clean, regulated 12V DC power. Without proper regulation, the battery overcharges (causing electrolyte boiling and early failure) or undercharges (causing starting problems and weak spark). This part replaces Kawasaki 21066-3703 and Shindengen SH527A-12. Note: Battery condition is critical — always fully charge and load-test the battery before replacing the regulator. Direct-fit OEM replacement. ADDITIONAL CROSS-REFERENCES: Product Type: Rectifier / Regulator Bore x Stroke: 76 x 70mm Induction: Reed Valve Ignition: CDI ⚠️ IMPORTANT: Verify OEM part number before ordering to ensure proper fitment.

• Compatible with KAWASAKI. Please verify your OEM part number from your original unit to help ensure fitment.
• Replaces: Oem Part Numbers: / Kawasaki: 21066-3703 / 210663703 / Shindengen: Sh527a-12 / Sh527a12 / Specifications: / Product Type: Rectifier / Regulator / Voltage: 12V / Condition: New / Engine Specifications: / Engine: 635Cc Inline 2-Cylinder 2-Stroke Reed Valve / Bore X Stroke: 76 X 70Mm / Induction: Reed Valve / Ignition: Cdi / Fuel: Twin Mikuni 38Mm Carburetors / Applications: / Js650 Jet Ski 650Sx Stand-Up Pwc (1988-1991) / Jf650 Jet Ski X2
• Applications: Kawasaki Js650 Jet Ski 650Sx — 635Cc Inline 2-Cyl 2-Stroke Pwc: / Kawasaki Js650 Jet Ski 650Sx 635Cc Inline 2-Cylinder 2-Stroke Reed Valve Cdi Stand-Up Pwc (1988) / Kawasaki Js650 Jet Ski 650Sx 635Cc Inline 2-Cylinder 2-Stroke Reed Valve Cdi Stand-Up Pwc (1989) / Kawasaki Js650 Jet Ski 650Sx 635Cc Inline 2-Cylinder 2-Stroke Reed Valve Cdi Stand-Up Pwc (1990) / Kawasaki Js650 Jet Ski 650Sx 635Cc Inline 2-Cylinder 2-Stroke Reed Valve Cdi Stand-Up Pwc (1991) /
• Applications: (1991) / / Kawasaki Jf650 Jet Ski X2 — 635Cc Inline 2-Cyl 2-Stroke Pwc: / Kawasaki Jf650 Jet Ski X2 635Cc Inline 2-Cylinder 2-Stroke Reed Valve Cdi Sit-Down Pwc (1988) / Kawasaki Jf650 Jet Ski X2 635Cc Inline 2-Cylinder 2-Stroke Reed Valve Cdi Sit-Down Pwc (1989) / Kawasaki Jf650 Jet Ski X2 635Cc Inline 2-Cylinder 2-Stroke Reed Valve Cdi Sit-Down Pwc (1990) / Kawasaki Jf650 Jet Ski X2 635Cc Inline 2-Cylinder 2-Stroke Reed Valve Cdi Sit-Down Pwc (1991) / ...
• Rectifier Regulator - Source: Aftermarket