Making Ground Connection Using A Through Bolt

WARNING: This page is about a different car, the 2023 Porsche Panamera and 2022 Porsche Panamera. However, it is still accessible from the selected car via links, so may be relevant.

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Diagram

-A-	> COUNTERSUNK SCREW 999.073.549.01
-B-	> HEXAGON NUT 900.377.003.01
-C-	Component 1
-D-	Component 2
-E-	Adhesive
-F-	Sealing compound

Drill a hole > Diameter 4 mm

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Drilling hole
Remove dirt and primer on both sides using an end brush > 9399/3 - end brush .

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Removing primer
Drill out the bore > Diameter 8 mm

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Drilling out bore
De-burr the bore on both sides.
Fit countersunk screw through the bore and secure it with a hexagon nut > COUNTERSUNK SCREW 999.073.549.01 > HEXAGON NUT 900.377.003.01
Tighten threaded joint to the specified torque > Tightening torque 15 Nm (11 ftlb.)
Seal threaded joint.