ACDelco Multi-Purpose Plug - 10040001 Part #: 10040001 Line: ACD ACDelco Multi-Purpose Plug 1 Year Limited Warranty Diameter (in): 3/8 Inch Diameter (mm): 10mm Material: Steel Thread Size: 1/8-27 Inch, M28-1.25 Attachment Method: Screw-In Thread Sealer Included: No Number Of Expansion Plugs: 1 Individual Plug Or Engine Kit: Individual Plug Show More Show Less