Spark plug · Bosch
Equivalents for the Bosch spark plug W 9 FC
The Bosch W 9 FC spark plug. All its 28 replacement references: compatible and interchangeable equivalents — NGK, Bosch, Champion, Denso…
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What can replace a Bosch W 9 FC spark plug?
The Bosch W 9 FC is interchangeable with: NGK BP5S, Bosch W9F, Champion J12Y, Champion J14Y, Champion J12YC, Denso W17P. 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.