Availability: 7 in stock
GM lists this f nut under number 19405513.
It is catalogued under Nuts & Washers > Nuts.
Washers used under aluminium or plastic are usually larger in outside diameter to spread load, and a standard washer will dish the surface.
A part that fails early usually points at an installation fault or a worn component nearby rather than at the part itself.
The part number is the thing to verify. Where the old part carries no legible number, a VIN and a photograph are enough for us to identify it.
Ships from our US warehouse in one to two business days, free over $59.