Product Details: The Delco Remy 28SI™ 12V 180A Pad Mount Brush Alternator ensures you are Ready for the Road Ahead™ by maintaining lower weight, enhancing temperature capability, and increasing fuel savings with its design to address vehicle applications that require high electrical output. Equipped with Remote Sense technology, this heavy duty alternator also uses a second wire that interprets actual voltage from the battery and increases voltage output to ensure a constant 14 volts at the battery. Thus, your battery is brought to a fully charged state in half the time with power you know you can rely on for your truck. This heavy duty alternator raises the bar with high amp output. Built with a dual internal fan, the 28SI™ brush alternator provides maximum cooling compared to conventional single external fan designs. FleetPride is your First Click in Heavy Duty®.