Spark plug · Bosch
Equivalents for the Bosch spark plug FR 78 X
Bosch FR 78 X is a spark plug. Find its 15 compatible and interchangeable spark plugs: cross-references for NGK, Bosch, Champion, Denso and every brand.
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15 equivalents compatible with the Bosch FR 78 X spark plug
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What can replace a Bosch FR 78 X spark plug?
The Bosch FR 78 X is interchangeable with: Bosch FR 56, Champion CET2, Denso K16TT, Bosch FR 78, Bosch FR 91, Bosch FR 91 X. 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.