F Nut – GM (19405607)

The f nut here is the GM part, numbered 19405607.

• Part number 19405607
• Brand GM
• Category Nuts & Washers > Nuts
• Worth knowing Where a nut is also a sealing element, as on a fluid line, the thread form is part of the seal rather than a fastening detail.

Nylon-insert lock nuts lose their prevailing torque after a single removal and should be replaced rather than reused.

Match this against the part you are taking off rather than against a photo. If the number is unreadable, send us the VIN and we will confirm it.