Belly pan/noise encapsulation bolt for most Mercedes Benz models. 10mm screw head with large washer.
Number of screws used varies by model, though the main bally pan piece typically uses 4 bolts.
- W164 ML - 4 screws on belly pan, 3 on front skirt
- W251 R-Class - 4 screws on belly pan, 8 on front skirt