| Also known as | T1965 |
| Diagram | Fig. 7 — GEARBOX SHAFTS, BEARINGS AND INNER COVER · ref 15 |
| Subsystem | gearbox |
| Listed in parts books | 1964–1966 |
Layshaft c/w 2nd and high gears (15/23T)
Layshaft assembly with 2nd and high gear (15/23T) fitted, for the gearbox internals.
57-1965 is a layshaft assembly for the gearbox, supplied complete with second and high (top) gear already fitted, with the 15/23 tooth count called out in the catalog. It appears in the gearbox shafts, bearings and inner cover section of the parts books, so it's part of the internal gear cluster that sits alongside the mainshaft inside the gearbox shell.
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On the older letter-prefix system this part was listed as T1965, so if you're working from an early parts book or an older shop manual, that's the number you'll find. The catalog data we have places it across gearbox listings from 1964 to 1966, so treat that as the span the catalog shows rather than a guarantee for any specific year not listed.
If you're rebuilding a gearbox and pulling the shaft cluster, it's worth checking this against your existing layshaft and gear pairing before ordering, since gearbox internals changed over the years and the parts books are your best guide to what goes with what.
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