| Diagram | Fig. 9 — Carburettors, Fuel Lines, Air Filter, Carburettor Mountings · ref 30 |
| Subsystem | fuel |
| Listed in parts books | 1971–1972 |
Norton Carburettor Heat Insulator Std.
A standard carburettor heat insulator, NM.23358, fitted between carb and mounting to cut down heat transfer into the carburettor.
This is a carburettor heat insulator, standard type, listed under part number NM.23358. It sits between the carburettor and its mounting point, part of the fuel system as shown in the carburettor and carburettor mounting figures in the parts books.
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The job of a heat insulator like this is to keep engine heat from soaking straight into the carb body. Too much heat transfer at that joint can cause fuel to percolate in the float bowl or throw off the mixture once the engine's been running a while, so this piece is meant to slow that heat path down.
Our catalog record for this one is thin — it only shows up once, tied to the 1971 to 1972 span. We don't have more detail on it than that, so before you order, check it against what's actually on your carb mounting and give us a call if you want to confirm fitment.
We've never carried this one. Tell us what you're after and we'll go looking — you'll get a price and photos before you commit to anything.
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