1、Durable Material: This 3 wire voltage rectifier is made of premium aluminum alloy material, which is corrosion resistant, durable and has long service life. 2、Scope of Application: Generator AVR automatic voltage regulator rectifier can be used for 170 178 186 188 diesel generators. Perfectly fit with your machine. 3、Direct Replacement: Generator automatic voltage regulator is easy to install and disassemble, you can replace the old or damaged parts conveniently. 4、Stable Performance: Generator automatic voltage regulator has good wear resistance, high reliability, stable performance, more reliable and convenient to use. Not easily damaged. 5、Good Workmanship: Adopting exquisite workmanship, beautiful appearance design, providing you great using experience. Practical generator accessories.