NGK Laser Platinum Spark Plugs (OEM Heat Range)

11-25 Chrysler / Dodge / Ram / Jeep 6.4L 392

97408

NGK Laser Platinum Spark Plugs offer OEM-grade ignition precision with enhanced durability for high-performance engines. Built with dual platinum surfaces, these plugs ensure slow electrode wear, extended service life, and consistent spark stability, making them ideal for daily-driven performance vehicles and demanding operating environments. The fine-wire platinum center electrode supports efficient ignition and clean fuel burn, promoting smoother idle, reliable cold starts, and improved throttle response. With a copper core for rapid heat transfer, pure alumina ceramic insulator for strength, and trivalent plating that protects against corrosion and seizing, these plugs are engineered for long-term performance. Triple sealing prevents leakage under high compression, while the extended projection design enhances combustion efficiency and emission control. A perfect solution when maintaining OEM heat range and factory performance is essential.

• OEM Heat Range for factory-spec performance and reliability
• Dual Laser-Welded Platinum Electrodes for long life and stable spark
• Fine-Wire Platinum Center Electrode (1.0mm) ensures efficient ignition
• Extended Projection Tip promotes clean combustion and smooth idle
• Copper Core improves heat removal and prevents knock
• Pure Alumina Ceramic Insulator for high strength and excellent heat transfer
• Anti-Corrosion Trivalent Plating prevents seizing and enhances durability
• Triple Seals ensure no combustion gas leakage
• Resistor Design (10k Ohm) reduces electrical interference
• Gap: .043” (1.1mm)
• Heat Range: 6

Torque Specs:

• Cast Iron: 10.8–18 lb-ft
• Aluminum: 7.2–14.5 lb-ft
• Longevity: Approx. 40,000 miles
• Quantity: Sold individually
• Warranty: 60 days

NGK is one of the most trusted names in ignition, supplying spark plugs, coils, and related ignition/sensor components used across both OEM and aftermarket applications. For performance enthusiasts, NGK’s plug technology and broad coverage make it a reliable baseline upgrade for consistent spark, cleaner burn, and dependable operation under heat and boost.