Spark plug · Bosch
Equivalents for the Bosch spark plug WR 91
Meet the Bosch WR 91 spark plug. Compare its 33 equivalents and find the cheapest compatible plug: NGK, Bosch, Champion, Denso and more.
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33 equivalents compatible with the Bosch WR 91 spark plug
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What can replace a Bosch WR 91 spark plug?
The Bosch WR 91 is interchangeable with: NGK BM 7 A, Bosch WR 56, Champion C 6 BYC, NGK BP 7 HS, NGK BP 7 EY-11, Bosch WR 78. 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.