| Also known as | T4437 |
| Diagram | Fig. 14 — CLUTCH · ref 12 |
| Subsystem | primary |
| Listed in parts books | 1971, 1974, 1976–1980, 1983, 1985 |
CLUTCH CENTER PLATE OUTWARD FACING
Clutch center plate, outward-facing type, for the clutch pack on unit-construction Triumph twins and triples.
The 57-4437 is a clutch center plate that sits in the clutch assembly on the unit-construction Triumph twins and triples, showing up in the parts books under the CLUTCH and GEARBOX OUTER COVER figures. It's called out specifically as the outward-facing plate, meaning it has a particular orientation in the clutch stack rather than being interchangeable with every plate in the pack.
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This is one of the friction/center plates that make up the clutch pack behind the primary cover, working alongside the other clutch plates to transmit engine power to the gearbox. Because the catalog lists it as outward facing, it's meant to go in at a specific point in the stack-up, so when you're rebuilding a clutch it's worth keeping the plates in order as you pull them so this one goes back where it came from.
You'll also see this part number written as T4437 in older parts books, same physical piece. It shows up across catalog listings spanning much of the 1970s unit-twin and triple production, so check your own parts book figure against ours before ordering if you're not sure which clutch you're working on.
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