Equivalents for the Bosch spark plug CH203
Bosch CH203 is a spark plug — heat range medium, reach 15.2–19.0 mm. Here are its 151 cross-references: equivalent, compatible and replacement plugs from NGK, Bosch, Champion, Denso and other makers.
Technical information Bosch CH203 spark plug
- Resistor
- no
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What can replace a Bosch CH203 spark plug?
The Bosch CH203 is interchangeable with: Bosch GLP040, Champion W425, Denso DG145, Bosch GLP228, Champion CH203, Champion CH2O3. These spark plugs share the same mounting (thread, seat) and heat range.
What are the specifications of the Bosch CH203?
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.