Holley 121-140: 121-140 Straight Nozzle Hole size .040"
Straight Nozzles *For 4150/4160/4500 carbs
Straight Nozzle Hole size .040'' Hollow nozzle screw included
Straight Nozzles *For 4150/4160/4500 carbs
Straight Nozzle Hole size .040'' Hollow nozzle screw included