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ADDED TO YOUR CART!
Tachometer Filter, 75-89 GM
ADDED TO YOUR WISHLIST!
This tachometer filter can be used as a direct replacement for the original GM tachometer filter which is no longer available from GM. This tachometer filter is installed between the tachometer and the tachometer 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.