| Also known as | E5374 |
| Diagram | Fig. 23 — OIL TANK · ref 16 |
| Subsystem | engine bottom |
| Listed in parts books | 1964–1965 |
BREATHER HOSE 1/4 IN
A 1/4 inch breather hose for the oil tank, shown in catalogs from 1964 to 1965.
This is the breather hose off the oil tank, a 1/4 inch line that vents crankcase pressure as part of the lubrication system. It shows up in the OIL TANK section of the parts book, so it lives right at the tank itself rather than deeper in the engine. Catalog listings for this one run from 1964 to 1965.
Read more
The part also carries the older number E5374, which is the pre-numeric factory form of the same hose, along with an alternate reference 5231K84 2.5 you may see cross-referenced in some catalogs.
Breather hoses are cheap insurance against oil mess and crankcase pressure problems, so if yours is cracked, hardened, or has been replaced with the wrong size tube, it is worth swapping. Bring your bike's parts book or ask us to confirm exact fitment before you order, since the catalog window on this one is narrow.
Sorry if we got something wrong here. If you think this information isn't correct, .