| Also known as | 60-0409D, D409D, E3722 |
| Diagram | Fig. 2 — CRANKCASE · ref 30 |
| Subsystem | engine bottom |
| Listed in parts books | 1964–1970, 1974 |
FILTER,CRANKCASE
Crankcase oil filter screen for Triumph 350/500 twins, PN 70-3722 (aka 60-0409D, E3722).
This is the crankcase oil filter, PN 70-3722, also known under the older 60-0409D, D409D, and E3722 numbers depending on which parts book you're working from. It shows up in the crankcase section of the parts books across a long catalog span, and its job is to sit in the oil circuit down in the bottom of the engine and screen out debris before oil gets recirculated.
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Because it's a filter screen down at the crankcase, it's the kind of part that's easy to forget about until an oil change or a bottom-end job has you in there anyway. Worth a look whenever the sump plug or crankcase is opened up, since a clogged or torn screen doesn't do the oil system any favors.
Our records tie this part to Triumph 350 and 500 twins across catalog listings spanning from the mid-60s to mid-70s, but if you want to be sure it matches your specific machine, give us a call and we'll confirm before you order.
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