This is a service purchase. You are buying our rebuilding services for your injection pump. This is for the non-electronic pumps. If your pump has a large wring harness coming out of the pump, this service would not work for your application. Once you order this item, you will recieve an email with a label to send your injection pump into us, freight prepaid. We will rebuild your injection pump and return it to you. This process generally takes 5-7 business days. This is a full rebuild that includes new bushings, blades & liner, and all gaskets and seals. These are the items that fail the most on these injection pump. All pumps are completely disassembled and all parts are inspected. Please note: Any additional item that has failed in the injection pump other than items listed will be an additional charge. This is usually not the case, but because we cannot determine whats wrong with your pump without seeing it, so we have to state that in this ad. You can contact us directly and we can discuss the problem with your unit prior to you sending it in.