| Also known as | E9886 |
| Diagram | Fig. 3 — OIL PUMP RELEASE VALVE AND OIL FILTER · ref 13 |
| Subsystem | engine bottom |
| Listed in parts books | 1971–1974 |
Gear – oil pump driven
The driven gear for the oil pump on unit-construction Triumph twins, part of the pump drive assembly behind the inner primary cover.
70-9886 is the driven gear for the oil pump on the unit-construction Triumph twins covered in these catalog years. It shows up in the parts book under the OIL PUMP RELEASE VALVE AND OIL FILTER figure as well as the INNER PRIMARY COVER — OIL PUMP figure, which tells you it's part of the oil pump drive assembly sitting behind the inner primary cover. The oil pump itself relies on a drive gear and this driven gear working together to keep oil moving through the engine, so if you're rebuilding the pump or chasing an oil pressure problem, this gear is one of the parts to check for wear.
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The older book number for this part is E9886, so if you're working from an earlier parts list and see that number, it's the same physical gear as 70-9886.
Our records don't spell out exact dimensions or material for this one, so if you're ordering to match wear patterns or a specific pump kit, it's worth confirming the gear's condition and fit against what's already in your pump housing before you commit.
We've never carried this one. Tell us what you're after and we'll go looking — you'll get a price and photos before you commit to anything.
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