CARQUEST alternators provide superior quality and performance on our 100% new alternators and starters as well as generators, motors, voltage regulators, rectifiers and other components for the Rotating Electrical market. CARQUEST 100% new alternators eliminates the hassle of core return while ensuring top quality and performance. Product Features:Engineered to meet or exceed OEM specifications for a perfect fit and hassle-free installation.Voltage regulator protection - load dump protected against transient voltage spikes avoiding potential battery damage. Low saturation voltage results in lower heat dissipation. Fully compliant in communication with ECU. High power rectifier assembly is designed with higher power open juction press fit diodes to keep the units running cool.Each unit includes a printed copy of the test results so you know exactly what to expect from our parts right from the first time they power on.