Be sure to add me to your favorites list!......................IF YOU PLAN ON PURCHASING MULTIPLE ITEMS PLEASE USE THE CART SYSTEM, SO WE CAN SHIP THEM TOGETHER...........ORIGINAL GM................KEEP YOUR CAR GM!....................GM REFERENCE NUMBER 25074335................C4 USED PARTS ARE ALL WE SELL AND SPECIALIZE IN...............1985-1988 Corvette C4 OEM OE cruise control servo, THIS SERVO HAS BEEN PROFESSIONALLY TESTED, BOTH ELECTROINICS AND VACUUM WORK,. Used. We ship on weekdays only. Shipping is USPS only. Please email with questions. No local pickup. If a problem arises, please email or call before leaving feedback. We are in Stuart Florida. NCRS member since 1983. Thanks for looking. (JH) 061926