NGK 4708 Spark Plug

NGK Laser Iridium Spark Plug Overview

The NGK Laser Iridium Spark Plug 4708 (Cr8eia-10) delivers reliable ignition performance with advanced materials and precise design. Engineered for durability and consistent spark delivery, this spark plug supports efficient combustion in a variety of vehicle applications.

• Iridium center electrode tip for enhanced durability and ignition
• Taper cut ground electrode tip design for improved spark exposure
• Copper core center electrode for optimal conductivity
• Nickel ground electrode core material with standard ground configuration
• Flat seat type with 5/8 inch hex size for secure installation
• Pre-gap size of 0.040 inches and reach of 0.75 inches
• Electrical terminal type: stud with 5000 ohm resistance
• Manufacturer heat range rating of 8 for controlled operating temperature

About the NGK Laser Iridium Spark Plug Line

The Laser Iridium Spark Plug line from NGK is designed to provide precise ignition performance and long service life. Featuring an iridium center electrode tip, these plugs offer improved wear resistance and stable spark generation compared to conventional plugs. The 4708 model benefits from this technology, making it suitable for vehicles requiring reliable secondary ignition components.

Technical Details and Performance

This NGK spark plug incorporates a copper core center electrode to enhance electrical and thermal conductivity, ensuring efficient spark transfer. The taper cut ground electrode tip increases spark exposure, which can improve combustion efficiency. The nickel ground electrode core provides durability, while the flat seat design ensures proper sealing in compatible cylinder heads. With a pre-gap of 0.040 inches and a reach of 0.75 inches, the 4708 spark plug fits applications requiring these specific dimensions.

Common Applications and Problem Solving

• Replacement for worn or fouled spark plugs causing misfires
• Improves ignition stability in engines experiencing rough idling
• Helps restore fuel efficiency by ensuring consistent combustion
• Addresses hard starting issues related to spark plug wear
• Reduces electrode wear in high-heat operating conditions

Installation Notes and Tips

Before installation, verify compatibility with your vehicle’s make and model using the part number Cr8eia-10 or stock number 4708. Ensure the spark plug gap is set to the recommended 0.040 inches if adjustment is necessary. Use a torque wrench to tighten the spark plug to manufacturer specifications to avoid damage to the electrode or cylinder head. The 5/8 inch hex size allows for standard spark plug socket use.

Quality Assurance and Warranty

NGK spark plugs are manufactured to meet strict quality standards for ignition components. The Laser Iridium Spark Plug 4708 undergoes rigorous testing to ensure consistent performance and durability. While specific warranty details are not provided here, NGK products typically come with manufacturer-backed quality assurance to support reliable operation.