Experience the pinnacle of racing performance with the Autolite AR3924 High-Performance Racing Resistor Spark Plug. Engineered for elite drivers, this spark plug provides the perfect blend of engineering excellence and value. Designed to fit seamlessly in various makes and models, it serves as an outstanding alternative to original equipment manufacturer plugs, ensuring your vehicle's ignition system operates at its best without compromising on quality or price. The Autolite AR3924 is crafted with a copper core center electrode and nickel material, optimizing heat transfer and electrical conductivity for unparalleled ignition performance. Whether you're a DIY enthusiast or a professional mechanic, these spark plugs are easy to install and promise improved fuel efficiency and acceleration. Say goodbye to frequent misfires and enjoy a smoother and more reliable engine start. Ensure optimal engine health today with Autolite's trusted and proven technology.

• Copper core center electrode enhances conductivity
• Nickel material for durability and performance
• Designed for high-performance racing applications
• Compatible with both foreign and domestic vehicles
• Value alternative to OEM plugs for various models
• Improves fuel efficiency and acceleration
• Easy installation for DIY enthusiasts and pros

Center Electrode Core Material:	Copper
Center Electrode Design:	Standard / Regular
Center Electrode Tip Material:	Nickel
Electrical Terminal Type:	Stud
Ground Electrode Core Material:	Nickel
Hex Size:	5/8in
Insulator Material:	Ceramic
Pre-Gap Size:	0.040
Reach:	0.750
Thread Diameter:	14.0

• Champion Spark Plug: 71
• NGK: 7373