| Also known as | 20-20381, JRC 20381 |
| Listed in parts books | Not catalogued by year yet |
VALVE GUIDE BLANK .308 (8mm) MNG BRNZ
A .308 in. (8mm) manganese bronze valve guide blank, sold as raw stock for machining to finished size.
This is a valve guide blank, listed at .308 inch (8mm) and made from manganese bronze. It's raw stock for a valve guide rather than a finished, ready-to-fit piece, so expect it to need machining to the correct outside diameter and finish reaming for your particular head before it goes in.
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Manganese bronze is a common choice for valve guide material because it holds up to heat and wears well against the valve stem, but beyond the size and alloy called out here we don't have more detail on this one in our records.
Give the shop a call if you want to talk through what machining this needs before you order, since a blank like this is meant for a machinist or engine builder to finish to spec rather than drop straight into a head.
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