Spark plug · NGK
Equivalents for the NGK spark plug 6644
The NGK 6644 spark plug. All its 26 replacement references: compatible and interchangeable equivalents — NGK, Bosch, Champion, Denso…
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26 equivalents compatible with the NGK 6644 spark plug
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What can replace a NGK 6644 spark plug?
The NGK 6644 is interchangeable with: NGK PTR5C-13, Bosch HR 8 DPP15V, Denso PT16EPR-L13, NGK PTR5D-13, Bosch HR 8 DPP30V, Beru 14 KR-8 DPUV. 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.