If I'm correctly reading the part # as 1300508007 a quick google search sent me to someone who's repairing the H4 headlight assembly on his 76 912E and someone else who claims its the boot cover for his Harley's headlight.

Steve Engel
87 Syncro

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On Sat, 4/18/15, OlRivrRat <OlRivrRat@COMCAST.NET> wrote:

 Subject: Re: Part
 To: vanagon@GERRY.VANAGON.COM
 Date: Saturday, April 18, 2015, 1:31 PM
 
 � � � � Hard to
 tell from just 1 view & that Pic seems to be distorted a
 bit ~
 
 Can you provide more Pic's ~
 
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 � � � � ORR ~ DeanB
 
 On 18 Apr , 2015, at 11:07 AM, B Feddish wrote:
 
 > Can someone identify this rubber part I found under the
 van?� The glasses are for scale, no wisecracks. ;)
 > http://www.feddishbasses.com/vw/part.html
 > 
 > Thanks,Bryan� � � � � �
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