| Also known as | S597 |
| Diagram | Fig. 3 — CRANKCASE · ref 16 |
| Subsystem | engine bottom |
| Listed in parts books | 1971 |
Oil pump stud
An oil pump mounting stud from the crankcase, listed under 21-0597 (also known as S597).
This is an oil pump stud, part number 21-0597, listed in the crankcase section of the parts books for 1971. It's one of the fasteners that holds the oil pump assembly to the crankcase, giving the pump body something solid to bolt down to and keeping it correctly seated against its mounting face.
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The older parts-book listing shows this under the S597 number, so if you're working from an early book or an original parts tag, that's the same stud you're looking at here.
Our catalog record only shows this appearing once, tied to the 1971 model year, so we can't speak to broader fitment beyond that. If you're not sure this stud matches what's on your crankcase, give us a call and we'll sort out fitment before you order.
We've never carried this one. Tell us what you're after and we'll go looking — you'll get a price and photos before you commit to anything.
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