Description 40IDA3C pair (LH plus RH)   New pair of Weber 40 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.   Manifolds and base gaskets can be found in the Related products tab   These are in stock and available for immediate shipping   Calibration is as follows:   Venturi                30mm Aux Venturi         4.5 Main Jet              125 Air Corrector       180 Emulsion Tube    F26 3130000102