Check the listing for details. Ford Mustang 302 5.0 5.8 Cylinder Head Smog Thermactor Plugs SBF 351 F4ZZ6E086A. Condition: New. Listed at 9.25 USD. Ford Mustang 302 5.0 5.8 Cylinder Head Smog Thermactor Plugs SBF 351 F4ZZ6E086A Set of 4 Ford Mustang 302 5.0 5.8 Cylinder Head Smog Thermactor Plugs SBF 351 Fits: Ford 302/351 Applications2 Needed per Cylinder HeadWorks with all OEM and Aftermarket Cylinder HeadsMade in the USAOEM Ford # F4ZZ-6E086-AThis Kit Contains 4 Plugs 5/8” -11 outside thread / 7/16”-14 inside thread Customer Service Policy: All Orders Shipped Same Day By 1pm EST or the next business day Fed-Ex shipping* is available for orders with delivery addresses within the US and territories, excluding PO Boxes and Rural Routes. USPS shipping is available for orders with a PO Box, Rural Route, or APO/FPO/DPO address. Orders shipped to a PO Box or Rural Route will arrive within 7-10 business days. Orders shipped to an APO/FPO/DPO address will arrive in 3-5 weeks, not the standard 3-5 business days. *Final delivery will be made by USPS. This will not affect the standard delivery time frame.