Spark plug · NGK
Equivalents for the NGK spark plug 6651
The NGK 6651 spark plug. All its 329 replacement references: compatible and interchangeable equivalents — NGK, Bosch, Champion, Denso…
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What can replace a NGK 6651 spark plug?
The NGK 6651 is interchangeable with: NGK DCP7E, Bosch F002G40509, Champion A6HC, NGK DCPR7E, NGK DCPR8EN, NGK DCPR7E-A. 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.