Spark plug · NGK
Equivalents for the NGK spark plug 3664
NGK 3664, a spark plug. All its 91 replacement references: compatible and interchangeable equivalents — NGK, Bosch, Champion, Denso…
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What can replace a NGK 3664 spark plug?
The NGK 3664 is interchangeable with: NGK BPR5EA, Bosch HR 7 DC, Champion RS9YC, NGK BPR5EY, NGK BPR6EFS, NGK BPR5EY-D. 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.