This is a Used set of (8) Steel Fuel Injector Stacks or tubes. They are 2 1/4" OD 2.170" ID and they are 4 1/2" long. These are screw down stacks and the bolt circle is 2.88".
Fuel Injection Stacks 2.720" OD 2.600 ID 5 1/2" Long Hilborn NHRA Sprint USAC WO
Fuel Injection Stacks 2 3/4" OD 2 5/8 ID 8 1/2" Long Hilborn NHRA Sprint USAC
Fuel Injection Stacks 2 1/2" OD 2.43 ID 4" Long Hilborn NHRA Sprint USAC WOO
Fuel Injection Stacks 2 1/2" OD 2.43 ID 10" Long Hilborn NHRA Sprint USAC WOO
Fuel Injection Stacks 2 1/4" OD 2 3/16 ID 6-8" Lg Hilborn NHRA Sprint USAC WOO 2
Fuel Injection Stacks 2 3/4" OD 2 5/8 ID 6" Long Hilborn NHRA Sprint USAC
