Spark plug · NGK
Equivalents for the NGK spark plug 4578
The NGK 4578 spark plug. 98 equivalents listed: interchangeable and compatible spark plugs across all brands — NGK, Bosch, Champion, Denso…
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What can replace a NGK 4578 spark plug?
The NGK 4578 is interchangeable with: NGK C7E, Bosch U 3 CC, Champion RG4HC, NGK CR7E, NGK CR7EB, NGK CR7EK. 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.