The Pertronix adjustable vacuum advance canister replaces the fixed advance unit on GM HEI distributors and lets the advance curve be tuned to the engine. It installs in the stock canister location and is sold individually.
- Type: Adjustable vacuum advance canister
- Adjustment: Tunable advance rate
- Fits: GM HEI distributors
- Sold as: Each
- Part number: D9006
FAQ
Which distributors does the D9006 fit?
It is built for GM HEI distributors and mounts in the factory vacuum advance location. Confirm the housing matches a GM HEI unit before ordering.
What is adjustable about it?
The advance rate can be tuned so the vacuum advance curve can be matched to the engine and driving needs.
Is it sold as a pair or single?
It is sold individually as each.

