General Sensor cap?

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General Sensor cap?

Joined
May 20, 2020
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346
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Location
San Pedro, California
What is this cap sitting around in our engine bay of our Fiat 500 with the 1.4 engine? It is the piece of plastic with the green dot. IMG_0314.JPG
 
Looks to me like it is attached to the lead, if so it is to protect the plug contacts when the plug not connected to it's socket.

If it's not connected to the lead and just resting on lead then it's likely from somewhere else
 
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