NGK 91715 Spark Plug

NGK Laser Iridium Spark Plug Overview

The NGK Laser Iridium Spark Plug 91715 is engineered for reliable ignition performance in select Chevrolet and Fiat vehicles, including the Chevrolet 500 and Fiat Spark models. Designed with advanced materials and precise specifications, this spark plug supports efficient combustion and engine responsiveness.

• Iridium center electrode tip for enhanced durability
• Copper core center electrode for improved conductivity
• Standard ground electrode with nickel core material
• Pre-gap size of 0.036 inches for optimal spark
• Flat seat type with 12mm thread diameter and 0.75 inch reach
• Non-removable nut electrical terminal type
• Manufacturer heat range rating of 7
• Hex size of 5/8 inch for installation

Detailed Product Features and Specifications

The NGK Laser Iridium Spark Plug 91715 features a single ground electrode with a standard tip design made from nickel, providing consistent grounding and durability. The center electrode combines a copper core for excellent electrical conductivity with an iridium tip, which offers a fine electrode point for precise ignition and longer service life. The spark plug’s pre-gap is set at 0.036 inches, ensuring optimal spark gap for efficient combustion. Its flat seat design and 12mm thread diameter with a 0.75 inch reach make it compatible with specific Chevrolet and Fiat engines, including the Chevrolet 500 and Fiat Spark. The non-removable nut terminal type simplifies electrical connection, while the 5/8 inch hex size allows for straightforward installation using standard tools. The heat range of 7 is suitable for the intended engine applications, balancing heat dissipation and performance.

About the NGK Laser Iridium Spark Plug Line

The Laser Iridium Spark Plug line from NGK is designed to provide precise ignition performance through the use of iridium-tipped electrodes. Iridium’s high melting point and durability contribute to longer service intervals and stable spark delivery. This product line focuses on delivering consistent combustion efficiency and reliable engine starts, making it suitable for a range of passenger vehicles, including the Chevrolet 500 and Fiat Spark models.

Applications and Common Issues Addressed

• Replacement for worn or fouled spark plugs in Chevrolet 500 and Fiat Spark engines
• Improves misfire issues caused by electrode wear or gap inconsistencies
• Helps restore engine responsiveness and fuel efficiency
• Reduces rough idling and starting difficulties
• Supports stable combustion under varied driving conditions

Installation Notes and Tips

When installing the NGK Laser Iridium Spark Plug 91715, ensure the spark plug gap is verified at 0.036 inches before installation. Use a torque wrench to tighten the spark plug to the manufacturer’s recommended specifications to avoid damage to the threads or improper sealing. The 5/8 inch hex size allows for compatibility with common spark plug sockets. It is advisable to inspect the ignition system components during replacement to maintain optimal engine performance.

Quality Assurance and Warranty

NGK spark plugs, including the Laser Iridium Spark Plug 91715, are manufactured to meet strict quality standards for durability and performance. While specific warranty details are subject to the retailer or distributor, NGK products typically come with a limited warranty covering manufacturing defects. Always consult the product documentation or supplier for exact warranty terms.