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Part #ID421
123 Electronic Ignition

123 Electronic Ignition System

This unique electronic ignition system features a fully digital advance mechanism and 16 selectable curves, making it suitable for all 1300-2000 4-cylinder engines up to 1981, except early Giuliettas with positive ground electrical systems.

For POSITIVE GROUND vehicles see our part number ID421P.

The unit is simple to install with only 2 wires to connect, and timing is also easily accomplished via a built-in LED indicator light. Once installed you can easily select between available curves.

Includes stock curves that simulate the original distributor in many European and US Market Alfas, as well as several performance curves suitable for tuned engines.

For replacement parts see our part number IC845 cap and IR982 rotor.



Status: In Stock
This item is in stock and ships immediately.

Photographs are intended as illustrations only and actual product may differ from photograph, and may change without notice. Alfa Romeo part numbers are listed for reference only and do not indicate parts are original equipment. Prices are subject to change without notice, and some items do not qualify for discounts or special offers. Inventory levels may change quickly and products listed as In Stock may be out of stock or backordered.  Individual components of a discounted "kit", all books, manuals, and wiring diagrams, and all electrical components (including ignition and fuel injection components) are non-returnable. Special Order items may not be cancelled or returned for any reason. For more information please refer to our Store Policies page.


Ignition Wires 105 115 116



Performance Cam 11.1mm



Header GTV Spider 1971-78 Ceramic