| Also known as | T2318 |
| Diagram | Fig. 9 — GEARBOX SHAFTS, BEARINGS AND INNER COVER · ref 9 |
| Subsystem | gearbox |
| Listed in parts books | 1968–1969 |
Mainshaft High Gear (22)
Mainshaft high gear (22 teeth) for the gearbox, later superseded by 57-3991.
57-2318 is a mainshaft high gear out of the gearbox, listed in the catalog under GEARBOX SHAFTS, BEARINGS AND INNER COVER. It's one of the gears that ride on the mainshaft inside the gearbox shell, and it carries 22 teeth per the parts book listing. The older number for this part is T2318 if you're working from an earlier book.
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This part was superseded by 57-3991 at the factory, so if you're chasing parts availability or cross-referencing against a newer catalog, that's the number to also have on hand. Our record only shows this one turning up in a single catalog listing for 1969, so we don't have a broad fitment history to lean on here.
If you're rebuilding a gearbox and need to confirm this is the right high gear for your particular box, give us a call with your frame or engine number and we'll help you sort out fitment before you order.
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