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JEGS Performance Products 40003

Adjustable Vacuum Advance For GM V8 HEI

JEGS Performance Products 40003

555-40003

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JEGS Performance Products 40003 Adjustable Vacuum Advance For GM V8 HEI $19.99
Adjustable Vacuum Advance
  • For GM V8 HEI

  • JEGS Adjustable Vacuum Advance for HEI replaces the OE non-adjustable unit. Allows you to change the amount of ignition vacuum advance for maximum performance while preventing detonation. Improves fuel economy, throttle response, horsepower, and performance. Includes 3/32" Allen wrench and easy-to-follow instructions.

    40003 - JEGS Adjustable Vacuum Advance for HEI is rated 4.5 out of 5 by 2.
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