This is a hard-to-find Factory OE FIAT / Yugo 17/64 (3.76) ring and pinion gearset for 5-Spd operation in cars such as Yugo, Fiat Tempra and Regatta.
NOTE: This gearset is for "wet axle" transaxles, It cannot be used in 1979-on X1/9, Strada and Ritmo with CV-axle transmission.
Use these parts as the basis for a Fiat X1/9 or 128 wet axle 4-Spd to 5-Spd conversion (i.e. Colotti type) conversion.
The ring gear is only compatible with the differential carrier assembies found in earlier "Wet axle" trans designs.
This final drive will drop your transaxle gear ratio from either 4.42 or 4.08 to 3.76, enabling you to maintain 75mph at around 3200 RPM!!
Condition: OE NOS
Original Equipment New Old Stock
New and unused.