Spark plug · NGK
Equivalents for the NGK spark plug 2171
Meet the NGK 2171 spark plug. Find its 148 compatible and interchangeable spark plugs: cross-references for NGK, Bosch, Champion, Denso and every brand.
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What can replace a NGK 2171 spark plug?
The NGK 2171 is interchangeable with: NGK B10EG, Bosch W 2 CS, Denso W31EN, NGK B10EV, NGK B11EG, NGK BCP7E. 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.