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threads to center of hole is 1”
When using HEI or stock-style ignitions systems
Ignition Switch
-Add your own ¼” NPT male quick disconnect fitting to Longacre’s Deluxe Air Tanks Special inlet valve and fill the tank straight from your air compressor hose in less than 10 seconds
Isolates sensors to eliminate engine vibrations
AccuTech™ Stepper Motor Tachometer Filter Platen threads to center of holeThe tach filter prevents erratic gauge operation by filtering out dirty electrical interference form selected hi power ignition systems. Installing a tach filter will clean up the noisy dirty signal and therefore smooth out the reading on the gauge. Filter for use with AccuTech SMi and DLi memory tachometers.
