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Difference between two cylinder head serial numbers

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Old Jan 18, 2020 | 03:07 PM
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Default Difference between two cylinder head serial numbers
Hey guys quick question I’m might need to purchase a new rear cylinder head the one I have is serial number 16720-84a and I found one online for a decent price but it’s stamped 16720-84. Would that One still be compatible with my bike? Thanks in advance
 
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Old Jan 18, 2020 | 03:20 PM
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Originally Posted by al0311
Hey guys quick question I’m might need to purchase a new rear cylinder head the one I have is serial number 16720-84a and I found one online for a decent price but it’s stamped 16720-84. Would that One still be compatible with my bike? Thanks in advance
Yes it is,
The letter designator behind a part number changes when Harley sources the part from a different place or material it's made from is upgraded but the basic design doesn't change.
 
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Old Jan 18, 2020 | 03:24 PM
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Thank you so much for the quick reply thank you again I scratched the inside of the valve guide pretty bad taking the valve out and being careless.
 
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Old Jan 18, 2020 | 04:11 PM
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Wouldn't it be cheaper to have the guide replace?
 
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Old Jan 18, 2020 | 05:20 PM
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Seems like a drastic way to repair a small problem...

But I`m not an expert on HD cylinder heads.
 
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Old Jan 18, 2020 | 06:37 PM
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My only option would be to remove the valve guides or hone them out correct ?
 
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Old Jan 18, 2020 | 07:38 PM
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No.. take it to a local shop and have them press out the old one and press in a new one... Very easy for a credited shop..
 
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