Does anybody know the difference between a 55196336 gearbox fitted in my 2006 fiat Panda and a 551963361 gearbox.
Sorry, it has been a few days before I could get to
ePER for a browse.
Firstly, I was surprised anyone might ask about a Fiat part number for a gearbox, as finding a new Fiat unit would be unlikely, unless a dealer had ordered one for stock and for some reason not used it.
Anyone selling a used gearbox and applying a Fiat number to it would just be applying the number they thought was appropriate, which is something to be wary of. What would be more important would be the vehicle it came from.
My version of
ePER is the last available on CD.
55196336 is not a gearbox. It is the tail housing only, a bare casting into which the shafts, gears and bearings, etc. are fitted. So using this for a complete gearbox is nonsense, as the housing is used for many boxes with differing internals. If someone is selling a complete box using this number, see paragraph above.
551963361 is not found on my version of
ePER. Probably a keystroke error, or someone trying to avoid issues using the manufacturer part number.
The Panda section shows the Panda 1.2 as having a 16/55 final drive, and the 1.1 having 16/57.
The internal gears appear to be the same for all 'normal' versions of 1.1 & 1.2. This excludes 4x4 and 'Eco' versions.
As the 1.1 & 1.2 models were plentiful, it looks like a gearbox from any other should be the same. There was a change internally, but the description seems to have lost something in translation, as it relates to adoption of "bosses and manifolds with shifted slots". No idea what that means, but it affects the synchro hubs.
I would suggest that a suitable replacement be chosen from a vehicle of similar age, or newer, as the later build is listed as a replacement for earlier boxes.