Spark plug · Ford
Equivalents for the Ford spark plug 9S51 12405 AA
Meet the Ford 9S51 12405 AA spark plug. Here are its 91 cross-references: equivalent, compatible and replacement plugs from NGK, Bosch, Champion, Denso and other makers.
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What can replace a Ford 9S51 12405 AA spark plug?
The Ford 9S51 12405 AA is interchangeable with: NGK DP7EA-9, Champion RA8MCX4, Denso X22EP-U9, NGK DPR7EA-9, NGK DCPR7EA-9, NGK DCPR7E-N-10. These spark plugs share the same mounting (thread, seat) and heat range.
Cross-references and specifications are provided for guidance only. The wrench size can vary by brand, and some data is inferred from the plug code or an equivalent reference. Always check the vehicle manufacturer's recommendation before buying and fitting.