| Listed in parts books | Not catalogued by year yet |
MAIN JET 190 PREMONOBLOC
A 190 main jet for Amal Premonobloc carburetors.
This is a size 190 main jet for the Amal Premonobloc carburetor, part number 4/042-190. The main jet controls fuel delivery at higher throttle openings, and Amal jets are numbered by size so you can step up or down to tune the mixture for your setup.
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Our catalog record on this one is brief, just the jet size and the fact that it's a Premonobloc fitment. If you're not sure whether your carb is a Premonobloc or a later Concentric, check the body casting before ordering since the jets aren't interchangeable between the two families.
Call the shop if you want help confirming which jet size your bike is currently running before you swap it out.
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