Up for sale is an NOS Ford/Motorcraft produced vacuum advance unit for most 1957-1972 Ford and Mercury vehicles with a V-8. The unit is as new and unused in its original box. The part number is B9AF 12370 A (Motorcraft DD-9) so application may be verified for your needs. Take a look at the pictures as they show the exact unit you will receive. Tested and working. Shipping will be $8.00. Thank you for looking!!!