Spark plug · NGK
Equivalents for the NGK spark plug 3321
NGK 3321 is a spark plug. All its 10 replacement references: compatible and interchangeable equivalents — NGK, Bosch, Champion, Denso…
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10 equivalents compatible with the NGK 3321 spark plug
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What can replace a NGK 3321 spark plug?
The NGK 3321 is interchangeable with: NGK IZFR6B, Bosch FR 7 LI 332 S, Champion OE227, Denso VKB20, Beru 14 FR-7 LPU02, Beru Z279. 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.