Keep your classic Dodge or Plymouth's spark timing responding to engine load with the Standard Ignition Distributor Vacuum Advance VC-173. It is a direct-fit replacement for many Dodge and Plymouth vehicles, including the 1969-1972 Dodge Charger, 1969-1972 Plymouth Barracuda and 1970-1972 Dodge Challenger. It covers a wide range of Dodge and Plymouth cars, trucks and vans. See the "Vehicles it fits" section for the full list and engine details.
A distributor vacuum advance control uses engine vacuum to advance ignition timing when the engine is under light load. It lets the timing return as vacuum drops. If the original unit leaks or sticks, timing advance may not respond as intended.
- Precision calibration: Calibrated for correct ignition advance.
- Leak-tested: Units are tested at 30HG maximum vacuum to confirm they do not leak.
- Quality control: Standard is a global maker of original equipment ignition products. It maintains quality control across the whole manufacturing process, from componentry to finished product.
- Ignition heritage: Standard has served the automotive aftermarket since 1919 with a focus on quality and broad ignition coverage.
Signs this part may need replacing: Hesitation or stumbling on light acceleration, reduced fuel economy, a vacuum leak at the distributor, or timing advance that does not move when vacuum is applied. These symptoms can have other causes, so diagnose the cause before replacing.
Interchange: V192 · 2875809 · 2875825 · 3438514 · CV3011 · VC3011
Product information is for general reference and may contain errors. See our Disclaimer.
This part cross-references / interchanges with the following part numbers:
V192, 2875809, 2875825, 3438514, CV3011, VC3011
Frequently Asked Questions
What does a distributor vacuum advance do?
It uses engine vacuum to advance ignition timing under light load and lets timing return as vacuum drops. The Standard VC-173 is calibrated for correct ignition advance on its listed applications.
Is the VC-173 leak-tested?
Yes. Standard tests these units at 30HG maximum vacuum to confirm they do not leak.
Which vehicles does the VC-173 fit?
It fits many Dodge and Plymouth models, including the 1969-1972 Dodge Charger. See the "Vehicles it fits" section for the full list.
What part numbers does the VC-173 interchange with?
It interchanges with V192, 2875809, 2875825, 3438514, CV3011 and VC3011.
How can I tell if my vacuum advance has failed?
Signs include hesitation on light acceleration, reduced fuel economy, or advance that does not move when vacuum is applied. If a leaking or stuck vacuum advance is the cause, this unit replaces it.
