Spark plug · Champion
Equivalents for the Champion spark plug QL 77 JC 4
Champion QL 77 JC 4 is a spark plug. All its 90 replacement references: compatible and interchangeable equivalents — NGK, Bosch, Champion, Denso…
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What can replace a Champion QL 77 JC 4 spark plug?
The Champion QL 77 JC 4 is interchangeable with: NGK B7H, Bosch W 4 AC, Champion L5, NGK B8H, NGK B7HV, NGK B7HZ. 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.