High quality reverse idler gear for Fiat and Bertone X1/9 from 1979-84 original fitment 5-spd transmissions and all 4-spd transmissions fitted in X1/9s from 1974-78.
16mm diameter centerbore shaft hole.
(up to chassis number 149269)
Late 5-Spd transmissions use the 18mm centerbore reverse idler gear.
18mm I.D. reverse idler is part number 7575271.
(from chassis number 149270)
Note: we recommend ordering X1/9 5-Spd components based on their physical examination due to the practice of swapping used 5-Spd transmissions between 1979-88 model year Fiat and Bertone X1/9s (as chassis numbers are only a guideline for 5-Spd transmissions 100% confirmed as the factory fitted unit at time of vehicle assembly).
Fiat X1/9 1974-84
Fiat 128 All (1971-79)