Spark plug · Denso
Equivalents for the Denso spark plug RFN42HZ
Denso RFN42HZ, a spark plug. 241 equivalents listed: interchangeable and compatible spark plugs across all brands — NGK, Bosch, Champion, Denso…
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What can replace a Denso RFN42HZ spark plug?
The Denso RFN42HZ is interchangeable with: NGK LFR5A, Bosch FR5ME, Champion E135, NGK LFR6B, NGK LFR4A-11, NGK LFR5A-11. 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.