For Sbc And Ls 6.25-Inch 12-1X Crank Trigger Wheel-556-185 transmission-filters 5039/6 V 1984 - 1993

5039/6 V 1984 - 1993 Ford E-150 Econoline 4/6 L 1984 - 1986 Mercury Capri 3

6L/V8 2006 Cadillac XLR 4

If you are looking for the replacement air filters please search for the D401-0013 product page

Additional secondary inlets for additional air flow

For Sbc And Ls 6.25-Inch 12-1X Crank Trigger Wheel-556-185 transmission-filters 5039/6 V 1984 - 1993Upgrading to an MSD Flying Magnet Crank Trigger Kit will deliver the precise and reliable signal that a high performance engine requires. This kit gives you the ability to control timing electronically through a Holley EFI ECU (or other standalone engine management system ignition controller). At the heart of the kit is the 3 wire Hall Effect Sensor that is easier to set up, less susceptible to EMI RFI interference noise, and less likely to have false