Thread: fuel neck grommet
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Old 12-07-2004, 02:07 AM   #3
GMCPaul
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Join Date: Mar 2000
Location: Rockville,In. USA
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The original fuel neck grommet on left is part #3978799 for use on 71-72 trucks, your GM dealer ordered you part #3886792 for use on 67-70 trucks.
So take the first one back and order a #3978799
GMCPaul
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