Am I Missing a Grounding Strap For My Gas Tank Sending Unit?

dadsbee said

The lock ring grounds the sender to the tank just fine, the O ring is between the tank and the inner sender face.

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For clean, non-rusty parts, agreed. The factory used a clip on ground strap spanning the rubber hose section from sender pipe to fuel hard line for a reason though. If it wasn't necessary, they would have for sure decided to save a few cents on every car and done away with them.