| Also known as | T1948 |
| Diagram | Fig. 7 — GEARBOX SHAFTS, BEARINGS AND INNER COVER · ref 11 |
| Subsystem | gearbox |
| Listed in parts books | 1964–1966 |
MAINSHAFT COMPLETE W GEAR
Complete gearbox mainshaft with gear, from the GEARBOX SHAFTS, BEARINGS AND INNER COVER section of the parts book.
This is the gearbox mainshaft, complete with its gear, listed in the catalog as MAINSHAFT COMPLETE W GEAR. It shows up in the GEARBOX SHAFTS, BEARINGS AND INNER COVER section of the parts book, so it lives inside the transmission, carrying the mainshaft gear as part of the shaft assembly rather than as a separate loose gear you'd fit yourself. The older parts books list this same piece under T1948, so if you're working from an early book and see that number, it's the same part as 57-1948 today.
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Our catalog record ties this one to appearances across 1964 through 1966, though we'd rather you confirm exact fitment against your own gearbox before ordering rather than rely on a general year span. Being a complete shaft-and-gear assembly rather than a bare shaft, it's the kind of part where getting the specific application right matters, since the mainshaft interacts closely with the rest of the gear cluster and bearings around it.
If you're rebuilding a gearbox and pulling shafts and bearings apart, it's worth having this on hand rather than trying to press a new gear onto a worn shaft. Give us a call with your frame or engine number and we'll make sure it's the right one for what you've got apart on the bench.
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