Holley 121-137: 121-137 Straight Nozzle Hole size .037"
https://eltopospeedshop.com/shop/hly-121-137-holley-121-137-121-137-straight-nozzle-hole-size-037-18013
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Straight Nozzles *For 4150/4160/4500 carbs
Straight Nozzle Hole size .037'' Hollow nozzle screw NOT included
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Shipping: 2-3 Business Days
