| Also known as | CH381B |
| Listed in parts books | Not catalogued by year yet |
HEAD GASKET,ALLOY 500 (close fine Aluminum Engine) .023 thick
Head gasket for the 500cc alloy close-fine engine, .023 in. thick, PN 70-3003.
This is a head gasket for the 500cc alloy-head engine, listed at .023 in. thick. It's the gasket that sits between the cylinder head and barrel, sealing combustion pressure and keeping oil and air from leaking out at that joint.
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The catalog notes call out the "close fine aluminum engine" head, so this is specific to the alloy-head version of the 500, not the earlier cast-iron head. You'll also see this part turn up under the older CH381B number in some parts books - same physical gasket, just the pre-renumbering designation.
We don't have much more shop history on this particular listing beyond what's in the books. If you're not sure whether your head is the alloy close-fine version this gasket is meant for, give us a call before you order and we'll help you sort out fitment.
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