NGK 94705 Spark Plug

NGK Ruthenium HX Spark Plug 94705

NGK 94705 is a Ruthenium HX High Ignitability spark plug built for direct-fit service across a wide range of Chrysler, Dodge, Jeep, Hyundai, Kia, Ram, Mercedes-Benz, Mitsubishi, Smart, and Volkswagen applications. It combines a ruthenium center electrode tip with NGK’s high-ignitability electrode design to support consistent ignition performance and stable combustion.

Key Features

• Ruthenium center electrode tip material for durable ignition performance
• Projected square platinum ground electrode design for high ignitability
• Copper core center and ground electrodes for efficient heat transfer
• 5,000 ohm resistance for modern ignition system compatibility
• Pre-gapped at 0.032 inches, with application-specific gap requirements listed in fitment notes
• Flat seat, 12 mm thread diameter, 26.5 mm reach, and 5/8 hex size
• NGK part number 94705, also identified as LKR7BHX

Product Details

The NGK Ruthenium HX High Ignitability Spark Plug line is engineered for vehicles that need reliable spark delivery and consistent firing under everyday driving conditions. NGK is a long-established OE supplier with broad coverage across domestic and import vehicles, and this plug reflects that background with OE-style dimensions, copper-core construction, and a ruthenium tip for long service life. Part number 94705 is used in many late-model and earlier applications, including Chrysler 300, Dodge Charger, Jeep Cherokee, Hyundai Tucson, Kia Sorento, Ram 1500, and Mercedes-Benz C350 fitments.

This part cross-references NGK 94705 for the same application.

What It Helps Address

• Hard starting caused by worn or fouled spark plugs
• Rough idle and inconsistent combustion
• Misfire codes related to weak spark output
• Reduced throttle response from degraded ignition performance
• Maintenance replacement for high-mileage ignition service

Installation Notes

Verify the vehicle-specific gap before installation. Some applications in the fitment list require a 0.044-inch gap, while others call for 0.032 inches or 0.036 inches. Use the notes for the exact year, make, and model match, and confirm the correct heat range and seat type before service. NGK 94705 is a direct replacement style spark plug for many compatible applications, including Chrysler 300, Dodge Challenger, and Jeep Grand Cherokee listings.

Quality Assurance

NGK manufactures spark plugs for domestic and import vehicles with OE-focused standards, supported by extensive North American manufacturing and distribution operations. The brand’s long automotive history and OE supply background support consistent product quality and application coverage.