| Also known as | 6939040 |
| Listed in parts books | Not catalogued by year yet |
RING SET T140 STD HASTING
Standard-bore Hastings piston ring set for the T140-family unit twin.
This is a piston ring set for the T140-family unit twin, standard bore, made by Hastings. The catalog listing is short and plain, but the model call-out is clear enough: it's a ring set sized for a standard-bore rebuild, not an overbore set.
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Ring sets like this go in when a set of pistons gets cleaned up and reused rather than replaced, or when a bore is left at standard size during a rebuild. We don't have extra detail on this listing beyond the ring set itself, so if you're not sure whether your bore is standard or has been taken out to an oversize, check your pistons or your last rebuild paperwork before ordering.
The alias number 6939040 refers to the same physical ring set under a different numbering scheme, so if that's what's printed in your parts book or old invoice, you're looking at the same part.
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