Equivalents for the Autolite spark plug B21N
Autolite B21N is an automotive spark plug — heat range very hot, reach 15.2–19.0 mm. Find its 323 compatible and interchangeable spark plugs: cross-references for NGK, Bosch, Champion, Denso and every brand.
Technical information Autolite B21N spark plug
- Resistor
- no
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323 equivalents compatible with the Autolite B21N spark plug
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No equivalent for this brand selection.
What can replace a Autolite B21N spark plug?
The Autolite B21N is interchangeable with: Bosch CH62, Champion CH62, Denso DG143, Bosch CH170, Bosch GLP047, Bosch CH62002. These spark plugs share the same mounting (thread, seat) and heat range.
What are the specifications of the Autolite B21N?
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.