Gaskets

Gearbox seal sizes:

Types 313,328,334:

Input shaft: 17x35x8 counterclockwise rotation

Driveshafts: 28x45x8, plus two 19x3 o-rings located over the planet gears splined ends.

Types 354, HA0:

Input shaft: 17x29x7 counterclockwise rotation, for all gearboxes without aluminum bellhousing (782 and 845cc engines)

17x28x7 clockwise rotation for gearboxes with the separate bellhousing fitted to 5-bearing engines (852, 956 and 1108 cc)

Driveshafts: 36x54x7,5 (industry standard 36x54x8 will fit equally well).

Differential bearing carriers: 104x3 o-rings

Speedometer drive gear: 8,5x16x7