| Also known as | E4594 |
| Diagram | Fig. 23 — OIL TANK · ref 10 |
| Subsystem | engine bottom |
| Listed in parts books | 1964–1965, 1967–1970, 1974 |
Flexible connector, long
Long flexible herringbone-pattern oil line connecting into the oil tank plumbing.
This is the long flexible oil line that connects into the oil tank plumbing, listed in the parts books under the oil tank and oil pipes and breather pipes figures. It's the herringbone-pattern hose Triumph used for connecting rigid oil pipe runs, allowing enough flex to route around the frame and engine mounting points without kinking. The catalog calls it a flexible connector rather than a hose or pipe outright, which is the term you'll see if you're working from an older parts book.
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The alias E4594 is just the earlier factory number for the same part, and "HERRINGBONE" refers to the ribbed pattern on the hose itself, which is how a lot of folks in the shop and in old catalogs refer to this style of oil line. It shows up across catalog entries from 1964 into 1974, so it's a part that stuck around across several years of production without much change on paper.
When you're replacing one of these, check the condition of the hose clips and the pipe ends it seats over, since a tired or cracked herringbone line is a common source of oil weeping at the tank connections. We don't have more specific routing detail on file beyond its appearance in the oil tank and oil pipe figures, so if you're not sure which of the several oil lines on the bike this one is, give the shop a call before you order.
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