46767057 C510 Third and Fourth Gear Synchronizer Ring

The 46767057 synchronizer ring is a third- and fourth-gear component for C510 manual transmission applications. It is used as part of a matching synchronizer assembly.

Compare the ring profile, engagement teeth and mating cone. Include the full gearbox identification when choosing the ring for a Fiat transmission rebuild.

Send the gearbox code, part number or component markings, dimensions and quantity. Include the gear position and photographs of the mating components where available.

Contact TOSEN for a quotation or browse Transmission Parts.

The 46767057 synchronizer ring is the third and fourth gear component of the C510 manual transmission family, used as part of a matching synchronizer assembly at that position. The ring provides the friction and timing work when a shift between third and fourth is made, bringing the rotating members to matched speed before the sleeve engages. Because the two gears share one synchronizer, the ring serves both directions of the shift, and it is supplied here as a single component for rebuilds of that assembly.

• Reference number: 46767057
• Component: synchronizer ring for the matching assembly
• Gear position: 3rd / 4th on one synchronizer
• Transmission family: C510 manual gearboxes

Selection combines the C510 family identification with the features of the removed ring. The ring profile, the engagement teeth and the mating cone are compared against the original, since those features define how the ring works with the rest of the synchronizer. A rebuild of a Fiat transmission in this family is identified through the full gearbox designation rather than the model name, because the designation carries the synchronizer configuration the ring must match.

• Family check: C510 gearbox designation in full
• Ring checks: profile and engagement teeth against the original
• Interface: mating cone at the same position
• Application: Fiat transmission rebuilds in this family

TOSEN checks each 46767057 enquiry against the C510 designation and the gear position recorded with the request. The ring profile, the engagement teeth and the mating cone details supplied from the removed part are reviewed against the order, and the quantity with the destination completes the record before the quotation is issued.

What does the 46767057 reference identify?

The reference identifies the synchronizer ring for the third and fourth gear position of the C510 manual transmission family. The ring works as part of the matching synchronizer assembly at that position, providing the friction and timing work for shifts in both directions. Rebuilds of Fiat transmissions in this family order the ring under this reference as a single component.

How is the correct ring for a C510 gearbox confirmed?

Confirmation starts with the full gearbox designation, which places the transmission inside the C510 family and its synchronizer configuration. The ring profile, the engagement teeth and the mating cone of the removed ring are then compared with the replacement, because those features must reproduce the original geometry. The designation and the comparison together anchor the order.

Why does the gear position matter for this synchronizer ring?

The third and fourth gears share one synchronizer position, so the ring at that position serves both shifts rather than one gear alone. Other positions in the same gearbox carry rings with different geometry, which is why the position belongs in every order. Confirming the position before ordering prevents a ring that fits the family but not the assembly.

What should a synchronizer ring enquiry for a Fiat rebuild include?

The enquiry carries the full gearbox identification, the reference number and the dimensions of the removed ring, together with the quantity. The gear position and photographs of the mating components support the comparison. With those details, TOSEN can verify the ring against the C510 assembly being rebuilt and quote the matching delivery.