1316304163 Synchronizer Hub for ZF Transmissions

The 1316304163 synchronizer hub is a first- and second-gear component for ZF manual transmission applications. It provides the hub interface for the matching synchronizer sleeve.

Select the hub by the ZF transmission model and assembly identification. The hub splines, sleeve engagement teeth and adjoining synchronizer parts must match the gearbox being rebuilt.

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 1316304163 synchronizer hub is the carrier of the synchronizer at the first and second gear position in ZF manual transmissions. The hub mounts on the shaft, provides the interface for the matching synchronizer sleeve and holds the adjoining synchronizer parts in their working relationship. While the synchronizer ring performs the friction work that matches the speeds of the rotating members, the hub provides the mechanical structure those parts operate on, which is the functional boundary between the two components. The hub is supplied here as a single component for rebuilding enquiries.

• Reference number: 1316304163
• Component: synchronizer hub for the matching sleeve
• Gear position: 1st / 2nd
• Application: ZF manual transmissions

The hub is selected through the ZF transmission model and the assembly identification, and the gear position confirms the synchronizer it serves. The hub splines must match the shaft it mounts on, the sleeve engagement teeth must match the sleeve that slides on the hub, and the adjoining synchronizer parts must agree with the hub geometry. Comparing those interfaces with the removed hub, guided by the gearbox identification, keeps the replacement aligned with the assembly being rebuilt.

• Primary check: ZF transmission model and assembly identification
• Position check: 1st / 2nd gear synchronizer
• Interface checks: hub splines and sleeve engagement teeth
• Assembly checks: adjoining synchronizer parts

TOSEN checks each 1316304163 hub enquiry against the ZF transmission model and the assembly identification recorded by the buyer. The hub splines, the sleeve engagement teeth and the gear position are reviewed against the order, and the adjoining synchronizer parts named in the request are checked for agreement. Quantity and destination details complete the record before the quotation.

What is the role of the synchronizer hub?

The hub is the carrier of the synchronizer: it mounts on the shaft, presents the interface the sleeve slides on and locates the adjoining synchronizer parts. The engagement teeth of the sleeve work against the hub during every shift at the position the hub serves. For the first and second gear position of a ZF manual transmission, this hub provides that carrier function.

How do the hub and the synchronizer ring differ?

The ring is the friction component that matches the speeds of the rotating members before engagement, while the hub is the mechanical carrier the synchronizer is built on. The ring wears through its friction work and the hub through its splines and teeth, so the two are inspected separately and ordered under separate references. A rebuild at one position can call for either component on its own.

Why does the 1st / 2nd gear position matter for this hub?

Each synchronizer position in a ZF manual transmission has its own hub geometry, so a hub dimensioned for another position will not serve the first and second gear assembly. The gear position recorded with the gearbox identification confirms that the 1316304163 reference matches the assembly being rebuilt. Checking the position first prevents an order that only fails at installation.

What should a synchronizer hub enquiry include?

The enquiry carries the ZF transmission model, the assembly identification and the gear position, together with the reference number and the quantity. Details of the hub splines and the sleeve engagement teeth support the comparison, and photographs of the mating components complete the record. On that basis TOSEN verifies the hub before quoting.