What size thread is a 3910x Autolite?
Autolite AR3910X Spark Plug
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Open Jun 27, 2025 - 10:44 AM
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Jun 27, 2025 - 10:44 AM
The Autolite 3910X spark plug typically has a thread size of 14mm in diameter with a 1.25mm thread pitch. This is a common size for many automotive spark plugs. However, it's always a good idea to double-check the specifications for your specific vehicle or application.
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Autolite AR3910X Spark Plug
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