3923 Spark Plug 3923/4 Copper

Experience exceptional performance and reliability with the 3923 Spark Plug 3923/4 Copper. Designed for high efficiency and durability, this spark plug is a crucial component for any engine. Here are the standout features that make it a must-have:

• Copper-Glass Seal: The unique copper-glass seal bonds the insulator and terminal post center electrode, ensuring full voltage is delivered at the spark gap for optimal combustion.
• Gas-Tight Seal: This spark plug offers a 100% leak-proof design, providing peace of mind and reliability during operation.
• Multi-Rib Insulator: The innovative multi-rib design reduces the risk of “flash-over,” enhancing the spark plug's overall performance.
• One-Piece Terminal Post: Built for strength and durability, the one-piece terminal post contributes to the spark plug's robustness.
• Resistor Feature: The built-in resistor minimizes radio frequency interference (RFI) and electrode erosion, ensuring longevity and high performance.
• Cold-Formed Steel Shell: The spark plug boasts a precision-rolled thread design, enhancing its fit and functionality.
• Full Copper Core Electrode: Provides superior performance in varying conditions, making it an ideal choice for diverse applications.

Before making a purchase, be sure to verify all cross-reference listings to ensure compatibility with your vehicle. Upgrade to the 3923 Spark Plug 3923/4 Copper and experience the difference in your engine's performance!