Spark plug · Bosch
Equivalents for the Bosch spark plug W 4 CS
The Bosch W 4 CS spark plug. All its 96 replacement references: compatible and interchangeable equivalents — NGK, Bosch, Champion, Denso…
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What can replace a Bosch W 4 CS spark plug?
The Bosch W 4 CS is interchangeable with: NGK B8EG, Bosch W 3 CC, Champion N2G, NGK B10ES, NGK B8ECS, NGK B8EGV. 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.