Dial in ignition timing under light load with the Standard Ignition Distributor Vacuum Advance VC-200. This vacuum advance control uses engine vacuum acting on its diaphragm to advance the distributor's ignition timing during cruise and part-throttle conditions, then returns as load and vacuum change. It drops in as a direct-fit replacement across a wide run of early-1970s Ford and Mercury vehicles, including the 1972-1973 Ford Bronco, 1970-1974 Ford F-100, F-250 and F-350, 1971-1975 Ford E-100 Econoline, 1972-1974 Ford Gran Torino, Ranchero and Torino, 1972 Ford LTD and Galaxie 500, 1973-1974 Mercury Comet, and 1972-1974 Mercury Montego — see the Buyer's Guide tab for the full list of applications.
- Precision calibrated: set to deliver the correct ignition advance for the application.
- Leak-tested: each unit is tested at 30HG maximum vacuum to confirm it does not leak.
- OE ignition heritage: built by a manufacturer serving the automotive aftermarket since 1919, with quality control maintained throughout production.
If a leaking or out-of-calibration vacuum advance is behind poor part-throttle timing or a sluggish, hesitant feel on your vehicle, this replaces it. Diagnose the cause before replacing.
Interchange: V339 · FV2034 · VC2034 · D2AF12370GA · D2AZ12370C · D2AZ12370G · D2UZ12370C · D3OZ12370C
This part cross-references / interchanges with the following part numbers:
V339, FV2034, VC2034, D2AF12370GA, D2AZ12370C, D2AZ12370G, D2UZ12370C, D3OZ12370C
