Description 46IDA3C pair (LH plus RH)   New pair of authentic Spanish Weber 46 IDA3C carburettors to suit Porsche 911   These have been cast from 100% new tooling produced from the original Italian Weber drawings and manufactured in the Spanish Weber factory using the very latest production techniques to ensure the finest quality and attention to detail.   These are in stock and available for immediate shipping   Calibration is as follows:   Venturi                42mm Aux Venturi         4.5 Main Jet              170 Air Corrector       145 Emulsion Tube    F24 3136000102