| Listed in parts books | Not catalogued by year yet |
MAIN JET- MONOBLOC MK1 MK2
Main jet, size 140, for Amal Monobloc Mk1 and Mk2 carburetors.
This is a main jet for the Amal Monobloc carburetor, Mark 1 and Mark 2 versions. The main jet controls fuel delivery at higher throttle openings, and it's one of the parts most riders end up swapping when they're tuning a Monobloc for a particular engine or altitude.
Read more
The part number itself carries the jet size, 140, which is how these are ordered and stocked - by number, not by any other description. If your carb book lists a different jet size for your bike, don't substitute this one without checking; Monobloc jets are sized individually and the wrong number will run rich or lean.
We don't have fitment history logged on this one beyond it being a Monobloc Mk1/Mk2 jet, so if you're not sure whether your carb is a Monobloc versus a later Concentric, give us a call before ordering.
Sorry if we got something wrong here. If you think this information isn't correct, .