| Also known as | E3732 |
| Diagram | Fig. 3 — OIL PUMP AND RELEASE VALVE; INLET MANIFOLD · ref 11 |
| Subsystem | engine bottom |
| Listed in parts books | 1964–1968 |
OIL PUMP NUT CEI
CEI-thread nut that secures the oil pump to the crankcase on unit-construction Triumph twins.
This is the CEI-thread nut that holds the oil pump onto the crankcase on unit-construction Triumph twins. It's a small piece but it does a real job, keeping the pump body drawn up tight against its mounting face so oil pressure stays where it belongs instead of leaking past the joint.
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The catalog lists it under the oil pump and release valve figures, right alongside the manifold and tappet listings, which tells you it lives right at the pump mounting on the crankcase. It's also known under the older E3732 number if you're working from an early parts book.
These show up across several catalog entries spanning the mid-to-late 1960s, so if you're rebuilding the oil pump assembly on an older unit twin, it's worth checking your parts book figure to confirm you're ordering the right nut for the CEI thread pump on your engine.
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