Equivalents for the Japan Parts spark plug PH25
Japan Parts PH25, a spark plug featuring heat range very hot, reach 15.2–19.0 mm. Compare its 167 equivalents and find the cheapest compatible plug: NGK, Bosch, Champion, Denso and more.
Technical information Japan Parts PH25 spark plug
- Resistor
- no
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167 equivalents compatible with the Japan Parts PH25 spark plug





















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No equivalent for this brand selection.
What can replace a Japan Parts PH25 spark plug?
The Japan Parts PH25 is interchangeable with: Bosch F005X04828, Champion W408, Denso G108, Bosch GLP103, Bosch GPH-408, Champion CH306. These spark plugs share the same mounting (thread, seat) and heat range.
What are the specifications of the Japan Parts PH25?
Reach 15.2–19.0 mm, Heat range Very hot, Resistor no, Seat Flat (gasket)
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.