5/16-32 (large alky size jet size) Main Jet Kit – E85/Alcohol .106 through .138 (4 each in .004 increments) *******check the jet thread size & pin range in your carburettor****

Typical jet thread sizes in APD Billet Enforcer carburettors

APD 4150 E85 carbs      1/4-32 thread size in larger pin sizes than gasoline jets (see APD gasoline jet kits)

APD methanol carbs      5/16-32 thread size (large alky jets)

APD 4500 E85 carbs     5/16-32 thread size (alky jet thread in smaller pin size)

APD jet kits are a great addition to any carb purchase. These jet kits are made in house by APD utilizing our precision manufactured jets, include 4 jets in each referenced size, and provides a wide range of tunability. Kits are packaged in clear plastic organizers for easy storage.