NGK 6917 Spark Plug

Reliable Ignition Performance for Mazda RX-7

The NGK Standard Spark Plug 6917 is engineered to deliver consistent ignition performance specifically for Mazda RX-7 models. Designed with durable materials and precise specifications, this spark plug supports efficient combustion and engine reliability.

• Resistance: 5000 ohms for stable electrical flow
• Ground Electrode Tip Design: Surface discharge for improved spark efficiency
• Ground Electrode Core Material: Nickel for durability
• Center Electrode Core Material: Copper for optimal conductivity
• Center Electrode Tip Material: Nickel to withstand high temperatures
• Pre-Gap Size: 0.056 inches for precise spark gap
• Hex Size: 13/16 inch for standard installation tools
• Insulator Height: 67.00 mm ensuring proper insulation
• Manufacturer Heat Range: 7 suitable for Mazda RX-7 engine requirements
• Seat Type: Flat for secure mounting
• Thread Diameter: 14.00 mm with 21.5 mm reach for correct fitment
• Electrical Terminal Type: Non-removable nut for reliable connection

About the NGK Standard Spark Plug Line

The NGK Standard Spark Plug line offers dependable ignition components designed to meet OEM specifications. The 6917 part number within this line provides a balance of durability and performance, utilizing nickel and copper materials to maintain consistent spark delivery and resist wear. This line is tailored for everyday driving conditions and supports engine efficiency in vehicles like the Mazda RX-7.

Technical Details and Application

The NGK 6917 spark plug features a surface discharge ground electrode tip and core materials selected for longevity and conductivity. The copper center electrode core enhances electrical transmission, while the nickel tip and ground electrode core provide resistance to heat and corrosion. The flat seat and precise thread diameter ensure a secure fit in the Mazda RX-7’s ignition system. With a heat range of 7, this spark plug is optimized for the thermal demands of the RX-7 engine, helping maintain stable combustion and engine responsiveness.

Common Issues Addressed by NGK 6917 Spark Plug

• Misfiring or inconsistent engine ignition
• Reduced fuel efficiency due to incomplete combustion
• Difficulty starting the Mazda RX-7
• Engine hesitation or rough idling
• Excessive spark plug wear or fouling

Installation Notes and Tips

When installing the NGK Standard Spark Plug 6917, ensure the spark plug gap is set to the specified 0.056 inches if adjustment is necessary. Use a 13/16 inch socket for proper torque application and avoid over-tightening to prevent thread damage. The flat seat design requires a clean and flat mounting surface for optimal sealing. Always inspect the ignition system components for wear or damage during replacement to maintain overall performance.

Quality Assurance and Warranty

NGK spark plugs are manufactured to meet strict quality standards, ensuring reliable performance and durability. The Standard Spark Plug 6917 undergoes rigorous testing for electrical resistance and material integrity. While specific warranty details may vary, NGK products typically come with manufacturer-backed quality assurance to support long-term use in compatible vehicles such as the Mazda RX-7.