| Also known as | T4033 |
| Diagram | Fig. 8 — GEARBOX SHAFTS, BEARINGS AND INNER COVER · ref 17 |
| Subsystem | gearbox |
| Listed in parts books | 1970, 1974 |
GEAR Layshaft Low Wide Ratio 29T 500 (57-1961)
Low (first) gear, 29-tooth wide ratio, for the gearbox layshaft; supersedes 57-1961.
This is the layshaft low gear, a 29-tooth wide-ratio gear off the gearbox layshaft, listed in the parts books under the GEARBOX SHAFTS, BEARINGS AND INNER COVER section. It's a straightforward internal gearbox component, part of the gear cluster that rides on the layshaft and works with its mating mainshaft gear to give you first gear.
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The current number 57-4033 replaced the earlier 57-1961 - same physical part, just renumbered along the way, so if your old parts book or a box of take-off parts shows 57-1961 (or the T4033 form), that's this gear.
Our catalog record shows this one appearing across gearbox listings from the early-to-mid '70s. We don't have more detail beyond that, so if you're matching this against a specific gearbox rebuild, best to check the tooth count and ratio against what's already in the box before ordering.
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