Spark plug · NGK
Equivalents for the NGK spark plug 3998
Meet the NGK 3998 spark plug. Here are its 88 cross-references: equivalent, compatible and replacement plugs from NGK, Bosch, Champion, Denso and other makers.
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What can replace a NGK 3998 spark plug?
The NGK 3998 is interchangeable with: NGK B9EG, Bosch W2C, Champion OE189, NGK B9ECS, NGK B9EGV, NGK B9EVX. 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.