Spark plug · NGK
Equivalents for the NGK spark plug 2721
The NGK 2721 spark plug. Here are its 21 cross-references: equivalent, compatible and replacement plugs from NGK, Bosch, Champion, Denso and other makers.
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21 equivalents compatible with the NGK 2721 spark plug
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What can replace a NGK 2721 spark plug?
The NGK 2721 is interchangeable with: NGK B10HS, Bosch W2A, Denso W27FS, NGK B9HCS, NGK B9HVX, Bosch W 2 AC. 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.