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.
NGK Laser Platinum Spark Plugs (OEM Heat Range): Chrysler / Dodge / Ram / Jeep 6.4L 392 2011 - 2025
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PART # 97408
97408 NGK 11-25 Chrysler / Dodge / Ram / Jeep 6.4L 392 Laser Platinum Spark Plugs (OEM Heat Range). Enhance ignition reliability and efficiency with NGK Laser Platinum Spark Plugs in the OEM heat range. Featuring dual laser-welded platinum surfaces, these premium plugs provide stable spark, smooth idle, improved fuel efficiency, and long service life. Designed for modern high-output engines, they deliver superior anti-fouling performance, excellent heat control, and consistent ignition under demanding conditions.
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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.
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YEARMAKEMODELSUBMODEL2012 - 2024Chrysler3006.4L 3922011 - 2023DodgeChallenger6.4L 3922011 - 2023DodgeCharger6.4L 3922018 - 2025DodgeDurango6.4L 3922012 - 2014JeepGrand Cherokee6.4L SRT82022 - 2024JeepGrand Wagoneer6.4L 3922021 - 2025JeepWrangler6.4L 3922013 - 2025Ram25006.4L 3922013 - 2025Ram35006.4L 392
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Standard shipping
Free Standard Shipping on orders over $250. Select “Free Shipping” at checkout.
Free Easy Returns
Need to return an item? We make it easy. Email us and we'll send you a free return label with instructions on how to return.