NGK 4968 Spark Plug

NGK Laser Platinum Spark Plug Overview

The NGK Laser Platinum Spark Plug 4968 is engineered for reliable ignition performance in Jaguar S-Type and X-Type models. Designed with precision materials and specifications, this spark plug supports efficient combustion and consistent engine operation.

• Part Number: 4968 (Tr6ap-13e)
• Compatible with Jaguar S-Type and X-Type vehicles
• Center electrode tip made of platinum for durability
• Copper core center electrode for optimal conductivity
• Standard ground electrode with nickel core material
• Pre-gap size of 0.052 inches for precise spark delivery
• Non-removable nut electrical terminal type
• Tapered seat type with 14mm thread diameter and 0.708 inch reach
• Hex size of 5/8 inch for installation
• Manufacturer heat range rating of 6

About the NGK Laser Platinum Spark Plug Line

The Laser Platinum Spark Plug line from NGK combines platinum-tipped electrodes with copper cores to balance durability and electrical performance. This design helps maintain stable ignition over extended service intervals, making it suitable for vehicles like the Jaguar S-Type and X-Type that require consistent spark quality under varied driving conditions.

Technical Details and Features

This NGK spark plug features a platinum center electrode tip that enhances wear resistance and maintains a stable spark gap. The copper core center electrode improves thermal conductivity, helping to dissipate heat efficiently. The ground electrode is constructed with a nickel core and a standard tip design, providing reliable grounding for the spark. The spark plug’s pre-gap is set at 0.052 inches, optimized for the ignition system of compatible Jaguar models. The tapered seat and 14mm thread diameter ensure a secure fit in the engine cylinder head, while the 5/8 inch hex size facilitates installation and removal.

Applications and Problem Solving

• Compatible with Jaguar S-Type and X-Type ignition systems
• Helps resolve misfires caused by worn or damaged spark plugs
• Improves cold start performance and throttle response
• Reduces fouling and electrode wear for longer service life
• Supports consistent combustion for smoother engine operation

Installation Notes and Tips

• Ensure the spark plug gap is set to 0.052 inches before installation if adjustment is needed
• Use a 5/8 inch socket wrench for proper torque application
• Apply anti-seize compound sparingly on threads to prevent galling
• Verify tapered seat engagement for a secure fit and proper sealing
• Follow vehicle manufacturer torque specifications to avoid damage

Quality Assurance and Warranty

NGK spark plugs are manufactured to meet strict quality standards, ensuring consistent performance and durability. The Laser Platinum Spark Plug 4968 undergoes rigorous testing for electrical resistance, heat range, and material integrity. While specific warranty details are not provided here, NGK products typically come with manufacturer-backed quality assurance to support reliable operation in Jaguar S-Type and X-Type vehicles.