| Also known as | T1668 |
| Diagram | Fig. 7 — CLUTCH AND CHAINS · ref 18 |
| Subsystem | primary |
| Listed in parts books | 1963–1964 |
Back plate
Clutch back plate for the primary drive, catalog number 57-1668 (formerly T1668).
This is the back plate for the clutch assembly, listed in the catalog under CLUTCH AND CHAINS. It appears in the parts books from 1963 to 1964 under number 57-1668, with the older T1668 designation being the same physical part.
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The back plate sits behind the clutch pack in the primary drive area, giving the clutch components a solid surface to work against inside the chaincase. Beyond that, our catalog record doesn't go into more detail on its exact construction or dimensions.
If you're chasing this part for a clutch rebuild, have your parts book open when you order so we can confirm the number matches what you've got listed, either as 57-1668 or the earlier T1668 form.
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