| Listed in parts books | Not catalogued by year yet |
VALVE GUIDE BSA +.004
A +.004 oversize valve guide for BSA engines, cataloged under 71-2300/004 with the older alias OCT-37.
This is a valve guide listed at +.004 over standard, for BSA engines - not a Triumph part, despite what the manufacturer tag on our system might suggest. The description in our records ties it to BSA fitment, and a related catalog entry points to the A65 twin. The oversize spec means this guide is meant for a bore that's been machined out slightly from stock, which is common practice when a guide bore has worn and needs to be brought back to true.
Read more
We show this part under the number 71-2300/004, with an older alias on file as OCT-37. If your parts book or an old invoice lists OCT-37, that's the same physical piece.
We don't have much more detail on this one beyond what's above. Valve guide work is machine-shop territory - give us a call before ordering so we can confirm it's the right guide and oversize for what you're working on.
Sorry if we got something wrong here. If you think this information isn't correct, .