Washer IDA3C Pump housing nut
Spring washer to suit pump housing nut on Weber
26OC
32OF
35DCNL
40IDL3C
40IDS3C
40IF3C
40IDA3C
40IDT3C
40IDTP3C
46IDA3C
Also can be used as 40 DFA, 40 DFAV geared sector cover washer spring
plus other 3 Barrel carburettors
ID 4mm
OD 7.5mm