Equivalents for the Febi Bilstein spark plug 21866
Febi Bilstein 21866 is a spark plug : heat range medium, reach 15.2–19.0 mm. Here are its 199 cross-references: equivalent, compatible and replacement plugs from NGK, Bosch, Champion, Denso and other makers.
Technical information Febi Bilstein 21866 spark plug
- Resistor
- no
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199 equivalents compatible with the Febi Bilstein 21866 spark plug



























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No equivalent for this brand selection.
What can replace a Febi Bilstein 21866 spark plug?
The Febi Bilstein 21866 is interchangeable with: Bosch CH232, Champion W433, Denso G126, Bosch GLP057, Bosch GLP275, Bosch O25O2O2128. These spark plugs share the same mounting (thread, seat) and heat range.
What are the specifications of the Febi Bilstein 21866?
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.