| Also known as | 70-0331 |
| Listed in parts books | Not catalogued by year yet |
VALVE GUIDE,IN&EX 650 KWPM C630 BRONZE
Bronze intake/exhaust valve guide for the 650 twin engine, also listed as 70-0331.
This is a valve guide for the 650 twin engine, listed for both intake and exhaust positions. The catalog lists it under bronze construction, using the KWPM C630 material spec you'll sometimes see referenced in older parts books. It also carries the earlier part number 70-0331, so if your book or an old invoice shows that number, you're looking at the same physical piece.
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A valve guide's job is straightforward: it's the fixed bore the valve stem rides in as the valve opens and closes, keeping the stem aligned and controlling oil clearance around it. Bronze guides like this one are a common approach because the material wears well against the steel stem while still letting heat move out of the guide into the head.
We don't have more detail on this one beyond what's in the catalog entry, so if you're not sure whether it's the intake or exhaust guide you need, or want to confirm it matches your head, give us a call before you order.
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