Spark plug · NGK
Equivalents for the NGK spark plug 3994
NGK 3994, a spark plug. All its 45 replacement references: compatible and interchangeable equivalents — NGK, Bosch, Champion, Denso…
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What can replace a NGK 3994 spark plug?
The NGK 3994 is interchangeable with: NGK BP8ES, Bosch W 5 DC, Champion N6YC, Bosch W 5 DC0, Champion N6YCC, Champion OE084. 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.