| Also known as | T3989 |
| Diagram | Fig. 11 — GEARBOX INNER COVER AND SELECTORS · ref 16 |
| Subsystem | gearbox |
| Listed in parts books | 1970–1974, 1976–1980, 1983, 1985 |
Selector fork rod
The selector fork rod from the gearbox, which the selector forks ride on to shift gears.
This is the selector fork rod out of the gearbox, part number 57-3989, known in the older parts books as T3989. It shows up in the gearbox inner cover and selectors figures as well as the crankcase listings, which tells you it's a shaft that runs through the gearbox internals and carries the selector forks that shift the gears.
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The rod is a straightforward but important piece of hardware. If it's worn, bent, or the forks on it are sloppy, you'll feel it as vague or hard-to-find gear changes. It's not a part most people think about until the gearbox starts acting up.
Our catalog record covers a run from 1970 into the mid-1980s across a number of listings, so this rod turns up in a lot of gearbox rebuilds from that era. Pull your old one and compare it side by side before ordering, since gearbox internals can vary by casing type.
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