403 Autolite Spark Plugs Spark Plug OE Replacement

Experience the high-quality performance of the 403 Autolite Spark Plugs, engineered to be the perfect OE replacement for your vehicle. With over 100 years of expertise and more than 11 billion spark plugs produced, Autolite is a trusted name in the automotive industry.

Key Features:

• Precision Engineering: Each spark plug is designed specifically for its application to ensure it meets or exceeds OE quality and performance.
• Durable Construction: The copper-glass seal effectively bonds the insulator and terminal post to the center electrode, guaranteeing a gas-tight seal that is 100% leak-proof.
• Enhanced Performance: The full copper core electrode allows for improved performance in all conditions, delivering quick starts, better fuel economy, and smooth acceleration.
• Multi-Rib Insulator: Reduces the risk of flash-over, ensuring safety and reliability.
• Resistor Technology: Reduces radio frequency interference (RFI) and minimizes electrode erosion for longevity.
• Strong Design: Features a one-piece terminal post and a cold-formed steel shell with precision rolled threads for added strength.

Specifications:

• Reach: 3/4 Inch
• Resistor: Yes
• Electrode Type: OEM
• Electrode Core Material: Copper
• Insulator Type: Non-Projected
• Thread Size: 14 Millimeter
• Seat Type: Gasket
• Wrench Diameter: 13/16 Inch Hex

With a limited 2-year warranty, the 403 Autolite Spark Plugs are designed to provide reliable ignition for all makes and models—import or domestic. Upgrade your vehicle’s performance today with Autolite!