Positive 123/Jag-6-R-V for classic Jaguars


The 123/JAG-6-R-V is designed to improve the performance of the Jaguar 3.4, 3.8 and 4.2 litre, 6 cylinder XK-engines.



123 ignitions for classic Jaguars Pristine classics


The ignition-system in a classic car is often the source of many problems. After years of use, the mechanical distributor becomes worn and increasingly inaccurate. Although replacement of the standard points with an optical eye or magnetic ignition set-up is an improvement, it does not compensate for the wear in the advance-mechanism, the distributor shaft and bearings within the distributor itself.

In a 123ignition, all moving parts like the original points, the centrifugal weights, the springs, the bearings and the vacuum-diaphragm have been replaced with just one moving part: the central shaft with the rotor. The internal electronics provide the right advance and the optimum dwell-angle throughout the revolutions range to maintain peak energy and peak performance. There is no wear altering the timing of the 123ignition: once set, you’ll never have to worry about it again!



Positive 123/Jag-6-R-V


We are proud to offer the 123 ignition systems to our catalog of parts. These are some of the best ignition systems out there for classic cars.

This model is designed for the

  • Jaguar 3.4
  • Jaguar 3.8
  • 4.2 litre,
  • 6 cylinder engines.


123 ignition positive 123/JAG-6-R-V Timeless parts

GB-4 123GB-4-R-V

We can provide a fitting service for your car, please contact us for more information here on sales@pristine-classics.com

123 Ignition fitting service

Manufacturers Description

The 123/JAG-6-R-V is designed to improve the performance of the Jaguar 3.4, 3.8 and 4.2 litre, 6 cylinder XK-engines. These engines require more degrees advance.

When the maximum specified degrees advance (see last page of the installation manual ) is more than you need, our advice is to order the 123-GB-6-R-V.
The unit offers 16 different advance-curves, which can be selected by means of a little switch. This is a great feature for easy fine-tuning your engine!

It also offers:
– Vacuum-advance
– Automatic dwell
– Spark balancing
– Automatic power-cut after 1 second
– Gear shift retard

Additional information

Weight 1 kg
Make Model
Jaguar E type
Jaguar E type 4.2
Jaguar Mark II
Jaguar XJS
Jaguar XK120
Jaguar XK140

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