NGK 7658 Spark Plug

Reliable Ignition Performance for Suzuki and Volvo Vehicles

The NGK Laser Iridium Spark Plug 7658 is engineered to deliver consistent ignition and efficient combustion for select Suzuki and Volvo models. Designed with durable materials and precise specifications, this spark plug supports optimal engine performance and fuel efficiency.

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

About the NGK Laser Iridium Spark Plug Line

The Laser Iridium Spark Plug line from NGK combines iridium's high melting point with precise electrode design to provide stable ignition and long service life. This product line focuses on delivering consistent spark performance while reducing electrode wear, making it suitable for modern engines requiring reliable secondary ignition components.

Technical Details and Specifications

This NGK spark plug features a single ground electrode with a standard tip design made from nickel, ensuring durability under typical operating conditions. The center electrode core is copper, which enhances electrical conductivity, while the iridium tip provides a fine spark point for efficient combustion. The plug has a pre-gap of 0.044 inches, optimized for the ignition systems of Suzuki Esteem, Grand Vitara, and Volvo S80, XC90, and XL-7 models. Its flat seat and 14mm thread diameter ensure proper sealing and fitment in compatible engines.

Compatible Vehicles and Applications

• Suzuki Esteem ignition system maintenance
• Suzuki Grand Vitara spark plug replacement
• Volvo S80 secondary ignition component
• Volvo XC90 ignition performance upgrade
• Volvo XL-7 engine tune-up and maintenance

Installation Notes and Tips

• Use a 5/8 inch socket wrench for installation and removal
• Verify the pre-gap size of 0.044 inches before installation
• Ensure the spark plug is tightened to manufacturer torque specifications
• Inspect the ignition coil and wiring for proper connection to the non-removable nut terminal
• Replace spark plugs at recommended service intervals for optimal engine performance

Quality Assurance and Warranty

NGK spark plugs are manufactured to meet strict quality standards, ensuring reliable ignition and durability. The Laser Iridium Spark Plug 7658 undergoes rigorous testing for heat range, electrode wear, and electrical resistance (5000 ohms) to maintain consistent performance. Warranty coverage details should be confirmed with the vehicle manufacturer or authorized NGK distributor.