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SKU
66-74728-1
Alt #:
64-74728

HEI Ignition Tachometer Filter

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$31.99 Each
Product Details
Installed between the tachometer and the ignition trigger source (usually the coil), this filter traps, redirects, and dissipates the high voltage spikes and surges that are emitted by any late-model high-energy ignition system. Also modifies the sharp up-and-down spikes into a semi-square wave signal for steady pointer readings and faster pointer response. Three color-coded wires allow fast and easy fool-proof connections for life-time protection and superior response on all classic tachometers.
Availability: In Stock - 3-5 Day Delivery
  • Must be used with HEI Ignitions
  • Cleans Up Signal
  • Easy To Install 

Installed between the tachometer and the ignition trigger source (usually the coil), this filter traps, redirects, and dissipates the high voltage spikes and surges that are emitted by any late-model high-energy ignition system. Also modifies the sharp up-and-down spikes into a semi-square wave signal for steady pointer readings and faster pointer response. Three color-coded wires allow fast and easy fool-proof connections for life-time protection and superior response on all classic tachometers.

HEI Ignition Tachometer Filter


Combined Cancer/Birth Defect
WARNING This product can expose you to chemicals including Phthalates which is known to the State of California to cause cancer on birth defects or other reproductive harm. For more information, visit www.p65warnings.ca.gov
More Information
Base Part Number 74728
Alt. # 64-74728
Eck OEM Number SN20
Brand Classic Instruments
Make / Model Series Body Notes Year
Make / Model Series Body Notes Year 2100
Make / Model Ford Thunderbird Base Series Body Notes Year 1958, 1959, 1960, 1961, 1962, 1963, 1964, 1965, 1966, 1967, 1968, 1969, 1970, 1971, 1972, 1973, 1974, 1975, 1976, 1977, 1978, 1979
Make / Model Ford Thunderbird Diamond Jubilee Series Body Notes Year 1978
Make / Model Ford Thunderbird Heritage Series Body Notes Year 1979
Make / Model Ford Thunderbird Town Landau Series Body Notes Year 1978, 1979
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