This voltage regulator rectifier features 4 pin terminals,rectangle shaped. Bridge as a power components, applied to various power equipment. It can prevent over-charging and improve charging capability. Suitable heat sink fin design for better heat elimination, so as to improve heat sink and charging capabilities. Features: 1. Usage: Saving and stabilizing current; 2. Durable and lasting; 3. Direct replacement to your original unit; 4. Prevent over-charging and improve charging capability; 5. Suitable heat sink fin design for better heat elimination; 6. Plug-and-play, direct fit, easy installation. No assembly required. Voltage: 12V Placement: Front; Pin Number: 4 Type: Voltage regulator; Condition: 100% brand new and high quality; Material: Rubber + plastic + metal Application: Fit for Scooter, Moped, ATVs, Gokarts, Buggie with GY6 Motor 50cc to 150cc. Package includes: 1 x Voltage Regulator Rectifier