Product Description
Differential ring gear and pinion
FIAT 124 Spider and Spider 2000 1978 1/2 to early 1980 (January 1978 to approximately August 1979 production date) with a 3.9:1 ratio
Ring gear is 24.2mm thick and has 10mm diameter bolt holes
This ratio was used in manual transmission Spiders
Fits rear loading differentials
