Equivalents for the Japko spark plug B123
Japko B123 is a spark plug — reach 15.2–19.0 mm, heat range medium. 137 equivalents listed: interchangeable and compatible spark plugs across all brands — NGK, Bosch, Champion, Denso…
Technical information Japko B123 spark plug
- Resistor
- no
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What can replace a Japko B123 spark plug?
The Japko B123 is interchangeable with: Bosch GLP094, Champion CH201, Denso DG180, Bosch GLPO94, Champion CH2O1, Champion GX4127. These spark plugs share the same mounting (thread, seat) and heat range.
What are the specifications of the Japko B123?
Reach 15.2–19.0 mm, Heat range Medium, 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.