Solex Economy Diaphragm kit      P/N B17457 

Suits Solex 30PSEI; 30PSEI-1; B30PSEI-2; B30PSEI-3; 33PSEI

This Kit has 2 springs included. The main (Economy) spring is 18mm Long and 10mm Diameter. The other spring is the Economy Valve Spring, which mounts on the body side of the diaphragm 

NOTE: Check carefully that this is the unit for your carburettor.
There is another Diaphragm Kit used in these carburettors which has a longer main spring that is 23mm long and 8mm diameter Kit No. B17456

Also suits Zenith 30IZ carburettors with 3 screw mounting economy diaphragm

Bedford HAE, HAV Handi Van

Ford Anglia 997cc. 105E 1963-66 30PSEI
Ford Anglia 1200cc. 1963-67 30PSEI-1
Ford Cortina 1200cc. 1962-63 30PSEI-2
Ford Cortina 1200cc. 113E 1963-67 30PSEI-2
Ford Cortina 113E 1200cc. 1967-70 30PSEI-1

Hillmam Minx V & VA, Super Minx MK II 1967/68

Holden Torana HB 4cyl 1160cc

Humber Vogue MK II

Triumph 1200, 12/50

Vauxhall Viva HAS, HAD