Genuine ACDelco OEM oxygen sensor, part number AFS-20 / GM 25162693. * Genuine ACDelco / GM part * Part Number: 25162693 * ACDelco Number: AFS-20 * New old stock (NOS) * Includes original ACDelco packaging * Packaging shows shelf wear, dirt, and storage wear * Sensor appears unused in original package * Please verify fitment using the part number before purchasing