NGK 5940 Spark Plug

Reliable Ignition with NGK Standard Spark Plug 5940

The NGK Standard Spark Plug 5940 delivers consistent ignition performance designed for a variety of vehicle applications. Engineered with durable materials and precise specifications, this spark plug supports efficient combustion and reliable engine operation.

• Resistance: 5000 ohms for stable electrical performance
• Pin type ground electrode tip with slant ground configuration
• Nickel ground electrode core and tip for durability
• Copper center electrode core with nickel tip for optimal conductivity
• Pre-gap size of 0.032 inches for precise spark gap
• Single ground electrode design with a 13/16 inch hex size
• Flat seat type and 0.75 inch reach for secure fitment
• Thread diameter of 14.00 mm and insulator height of 55.00 mm
• Manufacturer heat range of 10 suitable for various engine conditions
• Non-removable nut electrical terminal type for secure connection

About the NGK Standard Spark Plug Line

The NGK Standard Spark Plug line is designed to meet the requirements of everyday driving and standard engine configurations. This product line focuses on delivering reliable ignition performance with materials and designs that balance durability and cost-effectiveness. The 5940 spark plug is part of this line, offering dependable operation with a nickel ground electrode and copper core center electrode to maintain consistent spark delivery.

Technical Details and Performance

The NGK 5940 spark plug features a pin type ground electrode tip with a slant ground configuration, which helps optimize the spark path and improve ignition reliability. The nickel ground electrode core and tip provide resistance to wear and corrosion, while the copper center electrode core enhances electrical conductivity for efficient combustion. The pre-gap size of 0.032 inches ensures the spark gap is set for optimal ignition timing. With a flat seat type and 0.75 inch reach, this spark plug fits securely in compatible engines, maintaining proper sealing and heat dissipation.

Applications and Problem Solving

• Restores engine misfire issues caused by worn or fouled spark plugs
• Improves cold start performance in vehicles with compatible ignition systems
• Reduces rough idling and hesitation during acceleration
• Helps maintain fuel efficiency by ensuring consistent spark delivery
• Prevents ignition system damage from improper electrode materials or gap sizes

Installation Notes and Tips

When installing the NGK Standard Spark Plug 5940, ensure the spark plug gap is checked and adjusted if necessary to the specified 0.032 inches. Use a torque wrench to tighten the spark plug to the manufacturer’s recommended torque specification to avoid damage to the threads or improper sealing. The 13/16 inch hex size allows for standard spark plug socket compatibility. Confirm compatibility with your vehicle’s make and model before installation to ensure proper fitment.

Quality Assurance and Warranty

NGK spark plugs are manufactured to meet strict quality standards, ensuring consistent performance and durability. The Standard Spark Plug line undergoes rigorous testing for heat range, electrode wear, and electrical resistance. While specific warranty details for part number 5940 are not provided, NGK products typically come with manufacturer-backed quality assurance to support reliable ignition system operation.