s Messaging System. Our hours are: Monday Friday 8:00AM 5:00PM Saturday Sunday Closed Our main contact method is through Messages. We try to answer all messages within 24 hours. If we are unable to answer your questions before the listing ends the item will be re listed again soon for you to purchase. Core Charge. Core is an acronym for Cash On Return’. A core charge is sometimes applied to re buildable parts such as engines or alternators that can be redeemed for a portion of their original price. If the part you are purchasing has a core charge applied it will be noted in the description. Parts Grading. A standard code system is used to communicate the condition and quality of a part between automotive recyclers automotive repair shops and insurers. Knowing how these codes are used will help you understand whether the part meets your expectations before you buy it and what you can expect from the part when you receive it. A Grade The highest quality part. It is of low miles and or exceptional condition for its age. B Grade The second level quality part. It is of average miles and normal condition for its age. C Grade The third level quality part. It has high miles and or light damage. No Grade A part that has not yet been graded.