Autolite 3923 Copper Core Spark Plugs - 4 Pack

The Autolite 3923 Copper Core Spark Plug is designed for efficient combustion, reliable ignition, and smooth engine performance. With a copper core for optimal conductivity and excellent heat transfer, it ensures consistent spark and improved fuel efficiency. Ideal for conventional ignition systems, this spark plug offers dependable cold starts, reduced fouling, and long-lasting durability for a wide range of automotive and small engine applications.

Features & Benefits:

🔧 Copper core enhances spark efficiency and heat transfer

🔧 Nickel alloy tip resists corrosion, fouling, and electrode wear

🔧 Pre-gapped for fast, accurate installation

🔧 Provides smooth idle and reliable cold-start performance

Specifications:

Brand & Part Number: Autolite 3923

Material: Copper Core with Nickel Alloy Electrode

Thread Size: 14mm

Reach: 0.75 in. (19mm)

Gap: Pre-gapped (~0.040 in.)

Optimize your engine’s performance with Autolite 3923 copper core spark plugs!

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