A Factory OE brake hose banjo bolt fitting for front brakes on 1979-88 X1/9, all Fiat and Pininfarina 124-series, 128-series, 131, 850 and Lancia Scorpion cars.
3/8-24 thread, 24mm overall grip length. Specific to FIAT, hard to source.
Not for Series 1 (1972-78) X1/9 whose calipers require metric M10x1.25 banjo bolts. Use 4207393 instead.
Either new or new old stock as supplies permit, or a used unit media cleaned and freshly replated in yellow zinc.