This compact, easy to install, tachometer filter is installed between the tachometer and the tach signal source, usually the coil. The filter eliminates signal noise and surges caused by many ignition systems. The filter modifies the sharp up-and-down spikes into a semi-square wave signal for steady pointer readings and faster pointer response.

This tachometer filter can be used as a direct replacement for the original GM tachometer filter which is no longer available from GM. This is also a replacement for 1975 - 1989 Pontiac Firebird tachometer filter, and many other 1975 - 1989 GM vehicles.

Measures 2" wide x 0.75" high x 1" deep

Instructions Included

Important: Recommended for vehicles running a tachometer designed for points-style ignitions for a crisp and cleaner signal.