Well there's a thing I don't seem to understand, the 45 degree hose has a 19mm internal diameter and the breather filter's neck is 25mm, and the two are fitted tight one to another with the clamp (with the 25mm neck around the 19mm hose), right? And if so, what is the size of the air filter's neck then so that you can fit it to the 76mm end of the big hose?
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