I was fortunate to have visited the Stuttgart Porsche museum this week, where I saw a deconstructed 996 C4. The apparatus in the picture intrigued me. What is it? How does the floating ball (arrow) function?
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YOUR RESEARCHID this apparatus
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Looks like the fuel level sensor that sits in the gas tank.
I just replaced one like that in my toilet tank after 9 years - $8
Quotes source post: 25412
Of course, that's the fuel tank.
Fuel pump and fuel quantity sending unit in the tank. The ball floats and sends signal to gauge.
Quotes source posts: 25454, 25412
I looked at it a few time too, thinking it looks like a fuel sender -- but what's it doing in the trunk? Finally realized the tank was cut away too....
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