Distributor Vacuum Advance for 1959-1969 Chevrolet Impala & More - Standard Ignition VC-24A

Keep your ignition timing advancing as it should with the Standard Ignition distributor vacuum advance VC-24A, a vacuum advance control that uses engine vacuum to help advance spark timing under light-load driving. It is listed for many classic vehicles, including the 1960-1974 Buick Electra, 1960-1974 Chevrolet C10 Pickup and 1966-1974 Chevrolet Caprice. See the "Vehicles it fits" section for the full list and engine details.

• Precision calibration: Calibrated to deliver correct ignition advance.
• Leak tested: Units are tested at 30HG maximum vacuum to confirm they do not leak.
• Quality control: As a global manufacturer of original equipment ignition products, Standard keeps full quality control over manufacturing, from componentry to the finished product.
• Heritage: A premier aftermarket manufacturer since 1919, focused on quality and broad coverage for your ignition needs.

The vacuum advance senses engine vacuum and moves the distributor's advance mechanism, so ignition timing changes as engine load changes. Signs this part may need replacing include a vacuum leak at the unit, hesitation, sluggish acceleration or reduced fuel economy. These symptoms can have other causes, so diagnose the ignition and vacuum system before replacing. If a failed vacuum advance is the cause, VC-24A replaces it on the listed applications.

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