knucklehead casting numbers
Road Captain
Joined: Feb 2009
Posts: 691
Likes: 390
From: Western Australia
Welcome to the forum, Tim. The earliest casting date codes of this format that I know of are from 1938. Therefore D 21-6 usually indicates casting on April 21, 1946 and the part may have been used on a late-1946 model. Or it may have been used on a 1947 model because H-D didn’t always use parts straight away. H 1-1 usually indicates casting on August 1, 1941 and the part may have been used on a 1942 model or maybe a 1943 model.
Tried to send you a PM regarding other Knuckle info but apparently you're not receiving PMs? Please send me a PM if possible.
Eric
Tried to send you a PM regarding other Knuckle info but apparently you're not receiving PMs? Please send me a PM if possible.
Eric
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