The Pertronix 91589 Ignitor II kit converts Prestolite IDU series 8-cylinder distributors from points to electronic ignition. Ignitor II adds adaptive dwell control for stronger, more consistent spark. It installs inside the original distributor for a stock look and needs no external box. Match the distributor model to the Pertronix list before ordering.
- Type: Ignitor II points-to-electronic conversion kit
- Trigger: Magnetic with adaptive dwell
- Voltage: 12 Volt
- Ground: Negative
- Cylinders: 8
- Fits: Prestolite IDU series 8-cylinder distributors
- Sold as: Complete kit
- Part number: 91589
FAQ
What does the Pertronix 91589 kit do?
It replaces the breaker points inside Prestolite IDU series 8-cylinder distributors with a self-contained Ignitor II electronic module, ending point wear, misfire, and periodic point adjustment.
Does this kit need an external ignition box?
No. The module fits inside the original distributor and keeps the stock appearance, so no separate ignition box is required.
How do I confirm the kit fits my distributor?
Fitment is distributor-based. Match your distributor model against the Pertronix application list, or use the Pertronix Distributor Lookup, before ordering.
What does Ignitor II add?
Ignitor II adds adaptive dwell control that adjusts spark energy with rpm and current for stronger, more consistent output.

