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OPGI Price: $54.99
Part Type: (P) High Performance, designed to improve performance
Sold As: EACH
2017 Late El Camino Catalog Page: 192
If your factory or aftermarket tach isn't working, this is the simple solution to the problem: the MSD tach adapter. It will work with almost any tach. For use on non-current limiting ignition systems originally equipped with or without a ballast resistor.