123/GB-4-R for 4 cylincder Lucas distributor

VAT included

The 123/GB-4-R replaces most Lucas-distributors for engines in British (hence 'GB') cars, with a 4 cylinder engine (negative ground only).

Distributor cap: Straight (R)
vacuum advance: without
In stock

The 123/GB-4-R distributor replaces most Lucas-distributors for 4 cylinder engines

The unit offers 16 different advance-curves, which can be selected by means of a small switch. This is a great feature to easily fine-tune your engine!

Features of the 123ignition 123/GB-4-R

It also offers:

- Automatic dwell
- Automatic power-cut after 1 second
- Gear shift retard

Please note the following about the 123/GB-4-R

We strongly advise you to check the dimensions of the 123/GB with the original distributor. The 123/GB-4-R is a 123ignition that hasn’t vacuum advance. If you do need vacuum advance, you can order the 123/GB-4-R-V (WITH vacuum advance).

Please read the installation manual carefully. It contains more information about static timing and the advance-curves, the specifications of the 123ignition and a step-by-step description of the installation procedure.

Coils and spark plugs

Although used coils all look alike, they should be viewed with suspicion since one cannot tell from the outside whether, and how often they were exposed to overheating in the past. Installing the 123ignition system will ensure that the coil will never overheat again in the future. We recommend the 123 Blue Coil.

Perhaps you'll also need new spark plugs? At 123ignitionshop we have added the spark plugs most commonly used in addition to the 123ignitions we offer. See: the spark plugs list.

Complete set

Now you can also order the complete set for the Land Rover 2.25L in one go: the 123/GB-4-R distributor WITHOUT vacuum advance + ignition coil + set of 4 spark plugs + spark plug wires!

Data sheet

Direction of rotation
4,0 - 15,0 volts
500 - 8000 rpm
-30 to 100 Celsius
Stock or high energy coil, primary coil NOT below 1,0 ohm
Constant current, fully automatic
After 1 second current is switched off
Less than 0,5 degr. crankshaft
Max. Advance
45 degr. crankshaft
red +6V of +12V, black - coil
Chris Taylor 2020-08-27

Chris Taylor

Incredible! Fitted like a glove into my 1931 Citroen C4. The car started without problem and runs well. I had to make a new hold down bracket, but that wasn`t difficult. 5 stars!

Wim van der Wal 2020-05-25

montage bij MGA

het vervangen van de verdeler is gemakkelijk te doen.
wel opletten dat de verdeler me de kabeuitvoer naar boven wordt gemonteerd, anders kan de ontsteking niet op tijd gezet worden.
de keuzeschakelaar staat op 5.
het starten van de motor gaat veel gemakkelijker, de motor loopt mooi rond.
blij dat ik het gedaan heb.