NGK 7938 Spark Plug

Reliable Ignition with NGK V-Power Spark Plug 7938

The NGK V-Power Spark Plug 7938 is engineered to deliver consistent ignition performance for a wide range of vehicles including Bentley, Mercedes-Benz, Jeep, and Volkswagen models. Designed with durable materials and precise specifications, this spark plug supports efficient combustion and engine reliability.

• Resistance: 5000 ohms for optimal electrical performance
• Ground Electrode Tip and Configuration: Standard design with a single nickel ground electrode
• Center Electrode: Copper core with nickel tip for effective conductivity and durability
• Pre-Gap Size: .036 inches for precise spark gap
• Thread Diameter: 14.00 mm with a reach of .75 inches and flat seat type
• Hex Size: 5/8 inch for standard installation tools
• Electrical Terminal: Non-removable nut type for secure connection
• Manufacturer Heat Range: 5, suitable for moderate engine temperatures
• Insulator Height: 50.50 mm for proper insulation and heat dissipation

About the NGK V-Power Spark Plug Line

The V-Power Spark Plug line by NGK is designed to provide reliable ignition performance with a focus on durability and consistent spark delivery. This product line incorporates quality materials such as copper core center electrodes and nickel tips to balance conductivity and wear resistance. The 7938 part number exemplifies these characteristics, making it suitable for various secondary ignition applications across multiple vehicle makes and models.

Technical Details and Compatibility

The NGK V-Power Spark Plug 7938 features a nickel ground electrode and copper core center electrode, which together ensure stable ignition and efficient combustion. Its resistance rating of 5000 ohms helps reduce electrical noise and interference, supporting smooth engine operation. The flat seat and 14 mm thread diameter with a .75 inch reach make it compatible with many vehicles, including Cadillac 300SE, Dodge Ram 1500, Hyundai Sonata, Jaguar XF, Land Rover Range Rover, Mazda Miata, Mercedes-Benz C320, Mitsubishi Lancer, and Volkswagen Golf.

Common Applications and Problem Solving

• Restores engine misfire issues caused by worn or faulty spark plugs
• Improves cold start performance in vehicles like the Jeep Grand Cherokee and Kia Optima
• Reduces rough idling and hesitation in models such as the Subaru Legacy and Saab 9-2X
• Maintains fuel efficiency by ensuring proper spark timing in vehicles like the Pontiac Grand Am and Saturn Ion
• Supports smooth acceleration and power delivery in luxury models including Rolls-Royce Silver Dawn and Bentley Arnage

Installation Notes and Tips

• Use a 5/8 inch spark plug socket for proper installation
• Verify the pre-gap size of .036 inches before installation to ensure optimal spark performance
• Apply anti-seize compound on threads if recommended by the vehicle manufacturer
• Torque to manufacturer specifications to avoid damage to the spark plug or cylinder head
• Check compatibility with your vehicle’s make and model, such as Mercedes-Benz E320 or Dodge Dakota, before installation

Quality Assurance and Warranty

NGK spark plugs, including the V-Power Spark Plug 7938, are manufactured to meet strict quality standards for durability and performance. The use of nickel and copper materials ensures long service life under normal operating conditions. While specific warranty details may vary, NGK products typically come with manufacturer-backed quality assurance to support reliable ignition system operation.