Autolite 3910X Spark Plug

The Autolite 3910X Spark Plug

The Autolite AR3910X Racing Spark Plug is meticulously crafted for high-performance racing engines. Featuring a specialized cut-back ground electrode, it provides optimal flame kernel ignitability for quicker, more efficient starts. The yttrium-enhanced alloy reduces ground wire temperature by up to 8%, making it ideal for colder heat ranges and performance-modified engines.

Key Features:

• Superior Ignitability: Cut-back ground electrode for faster, more reliable ignition.
• Enhanced Durability: Anti-corrosive nickel plating prevents rust and ensures long-lasting performance.
• Optimal Heat Transfer: High alumina multi-rib ceramic insulator provides superior thermal conductivity and prevents flash-over.
• Race-Ready Design: Operates extremely cold to be nearly impervious to pre-ignition, ensuring consistent performance under intense conditions.
• Does not require a Gap Setting

Fits:

• Predator 212cc
• Tillotson 212cc
• Tillotson 225cc
• Honda GX190
• Most 196cc Clone Engines