A used transmission is a good deal because it has either been rebuilt or is being reused from a vehicle that no longer needs it. Regardless the reason, a Honda used transmission has been reworked because Honda used parts have to maintain the exacting standards of any newer Honda part. Without these standards, mechanics are able to use any used transmission they wish to fulfill a cars needs. But, Honda requires that the cars which require service and bear their name are supplied with certified used Honda parts to ensure that quality is maintained.