| Also known as | E6903 |
| Diagram | Fig. 1 — CRANKSHAFT AND CONNECTING RODS · ref 14 |
| Subsystem | engine bottom |
| Listed in parts books | 1967–1969 |
Taper compression ring
A taper compression ring for the bottom end, listed under Triumph part number 70-6903, also known as E6903 in older parts books.
This is a taper compression ring, listed under Triumph part number 70-6903 (also shown in older records as E6903). It shows up in the crankshaft and connecting rods section of the parts books, which places it down in the bottom end of the engine rather than up top with the barrels and pistons as you might expect from the name.
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Our catalog entries for this one span 1967 through 1969, appearing four times across that stretch. Beyond that, the record doesn't spell out more detail on exact model fitment, so it's worth confirming against your own engine before ordering.
If you've got the old E-prefix number in your parts book, E6903 and 70-6903 are the same physical piece under two different catalog eras.
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