NGK 93710 Spark Plug

Overview

NGK 93710 is a Laser Iridium High Ignitability spark plug built for OE applications that call for precise ignition performance and long service life. It uses an iridium-tipped center electrode, a platinum ground electrode tip, and a fine-wire design to support consistent spark delivery in modern ignition systems.

Compatible with Land Rover and Jaguar applications, this spark plug is a direct-fit choice for service work on models such as the Land Rover Defender 110 and Jaguar F-Pace. The NGK 93710 part number is also listed as SILZKAR8G7Y.

Key Features

• Laser Iridium High Ignitability design for OE-style ignition performance
• Iridium center electrode tip for strong wear resistance
• Platinum ground electrode tip with J-gap configuration for even electrode wear
• Copper core and ceramic insulator for heat control and stable operation
• Resistor-type construction with a 0.026 in pre-gap
• Flat seat, M12 x 1.25 thread, 14 mm hex, and 1.043 in reach

Detailed Description

NGK 93710 is engineered around the Laser Iridium High Ignitability product line, which focuses on OE-level fit and durable spark performance. The iridium center electrode is paired with a platinum ground electrode tip and fine-wire center electrode design to promote consistent ignition and controlled wear over extended service intervals. The copper core and high-grade ceramic insulator help manage heat, while the resistor design supports stable electrical performance. This spark plug is a practical replacement for Land Rover Defender, Discovery, Range Rover, and Jaguar applications that specify the SILZKAR8G7Y service number.

This part cross-references Jaguar Land Rover service numbers (e.g., SILZKAR8G7Y, LR091617) for the same application.

Common Uses

• Rough idle caused by worn spark plug electrodes
• Hard starting from weakened ignition output
• Misfire conditions related to plug wear or heat buildup
• Reduced throttle response from inconsistent spark delivery
• Service replacement at the factory recommended interval

Installation Notes

Verify the thread size, reach, seat type, and heat range before installation. The plug is specified with a 0.026 in pre-gap, so confirm gap settings against the vehicle service information before use. Apply proper spark plug service procedures and torque specifications for the engine being serviced.

Quality Assurance

NGK states that this Laser Iridium High Ignitability spark plug is tested to high standards for quality and durability. The design uses iridium and platinum electrode materials to support long service life in OE applications.