Solex Starter AIR Jet  used in many Carburettors 
 

Thread is 23/64" O.D. Length O/All is 19/64; Marked GA or Ga plus number  - 5 

Starter AIR Jets are used in numerous Solex Carburettors:
 

22IAC;
26AIC; 26ZAICO; 26ZIC; B26ZIC-2; 26ZIXC-3;
30AAPI; 30AHG; 30FAI; 30FAIO; 30FAIO-2; 30PAAI; 30PAAI-2;
C32BI; C32BIC; C32/30BI; 32BI; 32BIO; B32BIO-2; B32BIO-4; B32RBIO-2;
32BIP; B32BIPO-2; B32BIPO-4; 32PBI-2; B32PBI-5; 32PBIC; C32PBIC;
32PBICC; 32PBICA;
35AIP-2;
40AIP-2; 40RAIP-2; 35FAIE; 40FAIE

SOME of the vehicles these jets are used in:

Citroen with 30PAAI Carb No. OE38
Commer with 35AIP-2 Carb No. S1589
Commer with 40FAI Carb No. S865
DeSoto; Dodge; Fargo with 40AIP-2 Carb No. S1711
DeSoto; Dodge; Fargo with 40RAIP-2 Carb No. S1796
Ford with 30AAPI Carb No. S1503
Landrover with 32PBI-2 Carb Nos. S1513; S1560; S1741
Morris with 40AIP-2 Carb No. S1580
Morris with 35FAIE Carb No. S1399
Peugeot with 32PBICC Carb No. OE29
Peugeot with 32PBICA Carb No. OE30
Standard with 26ZIC Carb No S1722
Standard with 32PBI Carb No. S1506 
Triumph with 32PBI Carb No. S1506