With Expertise Built In™, the OTR Model 555 12V 160A Hinge Mount Alternator consistently performs to meet the demands of the road, while improving fuel economy and offering optimal wear resistance. The design of this OTR alternator incorporates several safety features that help minimize damage. This alternator also offers higher power output with less engine horsepower draw for your truck. The splines and bearing surfaces are heat-treated, with wire and varnish rated up to 356 °F. This OTR pad mount alternator has over-voltage shutdown and open-sense shutdown protection for your peace of mind. The over-voltage shutdown feature limits voltage if the output terminal becomes disconnected from the battery, while the open-sense shutdown feature stops the alternator if the sensed terminal goes open. This heavy duty alternator is wound on OE equipment, providing complete consistency that is 100% tested, and boasts heavy-coat polyester wire just like OE, which means reliability, consistency, and performance you can count on. OTR heavy duty parts offer the same form, fit, and function as OE. With comprehensive research, independent testing, and continuous product development, OTR heavy duty parts are sure to keep you and your truck safely on the road. In addition to providing the highest quality of heavy duty truck and trailer parts, you can rely on OTR warranties to be comparable or better than OE and top brands. FleetPride is your First Click in Heavy Duty®.