This is the threaded piece that holds the Main Jet / Emulsion Tube / Air Jet assembly in place in the Weber IDF carburetor. Fits 40 IDF, 44 IDF, and 48 IDF. This extended design allows for easier jetting changes on these carburetors. Note that very old IDFs may have been supplied from Weber with the shorter (Weber 52580.001) holder for OEM and street applications; the extended design will fit as long as you have clearance in your air filter. Two used per carburetor (one per emulsion tube assembly). Sold individually.
Fits IDF series carburetors only. The DCOE and IDA series carburetors require the shorter (WC-52580.001) holder. The threads are the same, but this longer version will not fit under the DCOE or IDA covers.
Note: Fits genuine Weber (made in Italy or made in Spain) carburetors only! Does not fit most copies, Asian knock-offs, or work-alikes.
