Set of 2 Reproduction rubber intake insulators / rubber intake manifolds / carb holders for the Honda CB/CL450 twins from the 60's and 70's. If you've discovered cracks on your stock intake boots, it's time to replace them because they're most likely leaking air which leans out your air/fuel mixture. A quick way to check is to spray something non flammable on the boots with the engine running, if you hear a change in RPM, they are leaking for sure!
Honda part number (gasket): 16229-283-306 - Qty. 1
Honda part number (insulator): 16211-283-000 - Qty. 1
I.D where carburetors mount: 42mm
I.D engine side: 33mm
Mounting hole spacing (measured center to center): 64mm
All models listed use 2 insulators. The left and right insulators are the same. Sold as a pair
These would probably also fit the CB500T (16211-375-000) but it does not share the same Honda part number, check the dimensions above.
CB450K - 1965-1974
CL450K Scrambler - 1968-1974