Spark plug · Autolite
Equivalents for the Autolite spark plug AR4
Autolite AR4 is a spark plug. 16 equivalents listed: interchangeable and compatible spark plugs across all brands — NGK, Bosch, Champion, Denso…
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16 equivalents compatible with the Autolite AR4 spark plug
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What can replace a Autolite AR4 spark plug?
The Autolite AR4 is interchangeable with: Bosch W240T1, Champion J6JM, Autolite A3X, ACDelco C42F, ACDelco M44C, Lodge HH14. 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.