Product Details: The Delco Remy 36SI™ 12V 170A Hinge Mount Brushless Alternator ensures you are Ready for the Road Ahead™ by maintaining lower weight parts that provides less work to power your truck. With its design to address high electrical output vehicle applications, this heavy duty alternator controls temperature capability, especially during a cold crank start. Using less engine horsepower, this heavy duty alternator technology translates to significant fuel savings. This heavy duty alternator also has Remote Sense technology, using half the time to bring your battery to a fully charged state. This technology uses a second wire that interprets actual voltage from the battery and increases voltage output to ensure a constant 14 volts of the battery for a stable start you know you can rely on. FleetPride is your First Click in Heavy Duty®.