The Pertronix LU-166A Ignitor is a points-to-electronic ignition conversion kit for British six-cylinder engines using the Lucas 22D series distributor, found on Jaguar and Triumph models such as the TR6 and GT6. It replaces the points and condenser with a maintenance-free magnetic-trigger module for reliable starting and a stronger spark. The kit runs on a 12-volt negative-ground system and installs inside the original distributor.
- Type: Pertronix Ignitor points-to-electronic ignition conversion kit
- Trigger: Magnetic trigger
- Voltage: 12 volt
- Ground: Negative ground
- Cylinders: 6
- Fits: Lucas 22D series 6-cylinder distributor (British)
- Sold as: Complete kit
- Part number: LU-166A
Vehicle Applications
- 1968-1973 Triumph GT6 (L6, 2.0L)
- 1968 Triumph TR250 (L6, 2.5L)
- 1969-1975 Triumph TR6 (L6, 2.5L)
- 1964-1966 Jaguar 3.8 (L6, 3.8L)
- 1967 Jaguar 340 (L6, 3.4L)
- 1967 Jaguar 420 (L6, 4.2L)
- 1964 Jaguar Mark X (L6, 3.8L)
- 1964-1966 Jaguar Mark X (L6, 4.2L)
- 1964 Jaguar XKE (L6, 3.8L)
- 1964-1971 Jaguar XKE (L6, 4.2L)
- 1969-1971 Jaguar XJ (L6, 4.2L)
- 1972-1974 Jaguar XJ6 (L6, 4.2L)
Fits Lucas 22D series 6-cylinder distributors; verify against the Pertronix fitment list.
FAQ
What does the Pertronix LU-166A Ignitor kit do?
It converts the original breaker-point ignition to electronic. The Ignitor replaces the points and condenser inside the existing distributor with a self-contained magnetic-trigger module, so the engine starts more reliably, holds timing better, and needs no points to clean, gap or replace.
What does the Pertronix LU-166A fit?
It is designed for Lucas 22D series 6-cylinder distributor (British). Fitment is determined by the distributor, so check your distributor against the Pertronix fitment list before ordering.
What electrical system does the LU-166A require?
It is built for a 12 volt negative ground system. Confirm your vehicle matches this voltage and ground polarity, because Ignitor kits are voltage and ground specific.
Does the LU-166A need any maintenance or a special coil?
No routine maintenance is required once installed, and there are no points to re-gap. It works with the vehicle's existing coil or a compatible Pertronix Flame-Thrower coil that matches the system voltage.

