For all Holley MPI / TBI / Terminator EFI systems up to 600 HP GM Gas " 6L Duramax Allison 1000|2000 Equipped

6L Duramax Allison 1000|2000 Equipped GM HD Vehicles (124062000)

Rough Country's 4" Ford Suspension Lift System is backed by our Lifetime Replacement Warranty

Every unit undergoes CNC blueprinting

Then returning the fuel

When replacing the discontinued filters with the new XWS1002 and PF3001XL

For all Holley MPI / TBI / Terminator EFI systems up to 600 HP GM Gas " 6L Duramax Allison 1000|2000 EquippedThis kit is designed to allow the use for all Holley MPI TBI Terminator EFI systems on vehicles equipped with dual fuel tanks. The fuel injection systems require a fuel return line. In dual tank applications, the fuel must be returned to the tank from which it was drawn. Originally designed for all TBI 4 bbl Pro Jection and 950 MPFI 4 bbl TBI systems.