C15 and C20 Gearbox difference?

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C15 and C20 Gearbox difference?

Lima

Ziz your car? Pretty car!
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Nov 12, 2007
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Hi. Does anyone know what differences exist between a fiat C15 gearbox and the C20. My car (1.2 8v) has the C20 gearbox which I need to replace but I am being told (by a gearbox workshop) that the C15 is the same. Presumably they aren't the same or else FIAT wouldn't have bothered making two identical cases with a different number cast on each one. One could presume that C20 came after C15 and so incorporates some improvements? Puzzled
 
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