Spark plug · NGK
Equivalents for the NGK spark plug 4691
NGK 4691 is an automotive spark plug. Compare its 209 equivalents and find the cheapest compatible plug: NGK, Bosch, Champion, Denso and more.
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What can replace a NGK 4691 spark plug?
The NGK 4691 is interchangeable with: NGK BP2E, Bosch W9D, Champion N9YC, NGK BP4ES, NGK BP5ES, NGK BP5ESZ. 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.