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Harmonic Balancer questions

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Old Jan 14, 2025 | 08:22 PM
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Harmonic Balancer questions

Gearing up to reinstall my harmonic balancer. Noticed its seen some better days and the rubber in cracking and clearly time for a replace.
Found one on rock auto (ATP 102100) for my 77 f150 with a 351m. Not looking to spend lots of money on it as its just a stock truck.
Dont know how picky these things are if anyone has any comments.
Also it says woodruff key not included... something I need to be concerned about? Thought it was just a keyway which ive still got from my last one
 
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Old Jan 14, 2025 | 08:35 PM
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Should be able to reuse yours, or get one at NAPA .
 
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Old Jan 14, 2025 | 11:36 PM
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X2 on a Napa balancer. Bring in your old one to match up with the new one. You could reuse your key, but Napa will have one and I'm sure it's still one of the few things that cost under a dollar in this world.
 
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Old Jan 15, 2025 | 10:30 AM
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I always forgot about Napa. Seems their name
brand stuff is decent. I can get one from them tomorrow for the same price so I’ll go ahead and do that.
Thanks
 
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