The Autolite 2543 Copper Resistor Spark Plug is engineered to guarantee optimal ignition performance. Boasting a copper core, this dependable spark plug promises quick starts, efficient fuel consumption, and smooth acceleration in line with OES standards. With over a century of expertise and more than 11 billion sold, Autolite provides unmatched reliability. Ideal for DIY auto enthusiasts and professional mechanics alike, this spark plug is backed by a 2-year warranty to ensure peace of mind. Upgrade for enhanced performance by opting for Autolite's Platinum, Double Platinum, or Iridium XP spark plugs. Designed to effortlessly fit a variety of vehicles, this Auto part is the industry standard choice for maintaining peak engine performance.

• Copper core ensures quick starts and smooth acceleration
• Designed to meet or exceed OES requirements
• Efficient fuel economy for prolonged engine life
• Trusted quality with over 100 years of engineering
• Backed by a 2-year warranty
• Easily fits a wide range of vehicle models
• Optimized for efficient ignition performance

Center Electrode Core Material:	Copper
Center Electrode Design:	Standard / Regular
Drive Size:	5/8in (16mm)
Gap- Factory Preset:	.044in (1.1mm)
Ground Electrode Configuration:	Single
Insulator Material:	Ceramic
Reach:	0.708in
Thread Size:	14mm X 1.25
Weight:	0.1000 lbs.
Dimensions:	1in x 1in x 3.4in