Sometimes The Parts Biz will offer a coupon code that can be used for a discount or sale. These coupon codes may apply only to specific items or categories, or they may be applicable for all items listed on the site. Coupon codes will only be applied to the items or categories of items that the code is designed for, NO EXCEPTIONS. These coupons do have an expiration date, and will NOT be accepted after this date. Coupon codes offered on 3rd party sites may be valid codes, however we cannot guarantee that a coupon code posted on a 3rd party site will be valid. Please contact us at [email protected] to see if a coupon code is valid.