Spark plug · Autolite
Equivalents for the Autolite spark plug 399
Meet the Autolite 399 spark plug. Here are its 62 cross-references: equivalent, compatible and replacement plugs from NGK, Bosch, Champion, Denso and other makers.
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What can replace a Autolite 399 spark plug?
The Autolite 399 is interchangeable with: NGK B5EB, Bosch W 8 CC, Champion N5C, NGK B5ES, Champion OE074, Denso W16ES-U. These spark plugs share the same mounting (thread, seat) and heat range.
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.