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.........KEEP YOUR CAR GM!..............1984-1989 Corvette C4 air condition/heater vacuum lines small check valve, original GM, used. We ship weekdays only. Shipping is USPS only, NO EXCEPTIONS.  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. (NTTX cott below tins) 102725