Hi Alyssa, I'm pleased to assist you. "Remanufactured" alternators are rebuilt units that have been taken apart, cleaned, and rebuilt with new parts to make them function like new again. Simply put, the housing of the alternator is used but everything inside is brand new. A core charge is a deposit that you pay when you buy a remanufactured alternator. This deposit is reimbursed to you when you return your old alternator to the seller. This encourages the return of the old part, which may then be refurbished and resold. The core charge is typically refunded upon receipt of the old part, provided it meets the criteria specified by the seller. You can click the link below to continue ordering today while the part is in stock. Happy shopping! https://www.carparts.com/alternator/quality-built/mpa11020?can=CPGG4850_CSQA_20240108

Hi Nana, I'm glad to assist you. Please call us by dialing, 1-866-529-0412. Then ask to be transferred to the returns department. You will have to pay for shipping the core back. It is the rule ever since. We do not shoulder the shipping cost of the core, as per policy. I hope this helps.

Hi Ka Leighty, This alternator has 12 volts, 110 amps, and with 6 groove pulley.