NGK 97138 Spark Plug

Reliable Ignition Performance for Acura and Honda Vehicles

The NGK Iridium IX Spark Plug 97138 is engineered to deliver consistent ignition and improved combustion for select Acura and Honda models. Designed with advanced materials and precise specifications, this spark plug supports efficient engine operation and durability.

• Iridium center electrode tip for enhanced durability and stable ignition
• Taper cut ground electrode tip for optimized spark exposure
• Copper core center electrode for excellent conductivity
• Standard ground configuration with nickel ground electrode core
• Non-removable nut electrical terminal type for secure connection
• Pre-gap size of 0.044 inches for precise spark gap
• Flat seat type with 14mm thread diameter and 0.75 inch reach
• Hex size of 5/8 inch for easy installation
• Manufacturer heat range of 6 suitable for moderate engine temperatures

About the NGK Iridium IX Spark Plug Line

The Iridium IX Spark Plug line from NGK is designed to provide improved ignition performance and longer service life compared to conventional spark plugs. Featuring an iridium center electrode tip, these plugs offer enhanced wear resistance and stable spark delivery, which contributes to better combustion efficiency. The 97138 part number is part of this line, tailored for specific Acura and Honda models requiring precise ignition components.

Technical Details and Compatibility

This spark plug features a copper core center electrode that ensures excellent electrical conductivity, paired with an iridium tip for durability. The taper cut ground electrode tip design improves spark exposure, promoting efficient combustion. The plug’s flat seat and 14mm thread diameter with a 0.75 inch reach make it compatible with various Acura and Honda vehicles, including the Accord, Civic, CR-V, CSX, Element, Fit, MDX, RL, RSX, TL, and TSX. The non-removable nut terminal type provides a secure electrical connection, while the 5,000 ohm resistance helps reduce radio frequency interference.

Common Applications and Problem Solving

• Restores engine misfire issues caused by worn or fouled spark plugs
• Improves cold start performance in Acura and Honda vehicles
• Enhances fuel efficiency by ensuring consistent ignition
• Reduces rough idling and hesitation during acceleration
• Supports stable combustion to lower emissions

Installation Notes and Tips

Before installation, verify the spark plug gap is set to the recommended 0.044 inches. Use a torque wrench to tighten the spark plug to the manufacturer’s specifications to avoid damage to the threads or seat. The 5/8 inch hex size allows for standard spark plug socket compatibility. Ensure the engine is cool before replacing spark plugs to prevent thread galling. This spark plug is designed for direct replacement in compatible Acura and Honda models without modification.

Quality Assurance and Warranty

NGK spark plugs are manufactured to meet strict quality standards, ensuring reliable performance and durability. The Iridium IX Spark Plug 97138 undergoes rigorous testing for heat range, electrode wear, and electrical resistance. While specific warranty details may vary, NGK typically offers coverage against manufacturing defects. Always consult vehicle and NGK documentation for warranty terms.