I've just had a rather lengthy discusion with K&N while trying to find part numbers for my 2005 4X4. I hope this will save someone else the bother.

Listed as Fiat Panda 1.2 8v OHC 60bhp 2003 - on
Replacement panel filter is part number 33-2870.
Induction Kit is part number 57-0588

Thanks to Don Marshall of K&N.

While I'm on;
EBC Performance Brakes
Covers 1.1, 1.2 and 1.3D from 2004 on
Front brake pads
Replacement DP1573
Upgrade DP21573
Rear Brake shoes
Replacement 6625
They do not list rear brake pads for those of us with discs.

Magnecor don't have HT leads listed but are happy to make them.
I've heard nothing back from Goodridge hoses.

Does anyone know of any other after market parts?