My 66 AIM lists the part number for the vented gas cap as 3843576. As recent auction on e-bay listed for an NOS cap with original GM box listed the part number as 3952708. Does anyone know the difference between these two part numbers? Does the one in the AIM include the gasket and the 3952708 is perhaps w/o the gasket? One was the 3952708 a service replacement part that differs in some way from the original produciton part?
Thanks,
Gary
Thanks,
Gary
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