Leece-Neville Heavy Duty OEM AVi555 alternators are the latest in the iconic STATE OF THE ART alternators. Now 170 amps and able to provide powerful performance at consistent max rated temperatures, the dual internal fan design is ideal for Class 5 through 8 vehicles minimizing heat damage for longer service life. These remote sense equipped alternators are lightweight, includes multiple locations for both B+,B- connections and feature heavy duty front and rear bearings.