NGK 4912 Spark Plug

NGK Laser Iridium Spark Plug 4912 Overview

The NGK Laser Iridium Spark Plug 4912 is engineered for reliable ignition performance in select Toyota, Lexus, Pontiac, and Scion models. Designed with advanced materials and precise specifications, this spark plug supports efficient combustion and consistent engine operation.

• Iridium center electrode tip for enhanced durability and ignition
• Copper core center electrode for improved conductivity
• Standard ground electrode with nickel core material
• Non-removable nut electrical terminal type
• Pre-gap size of 0.044 inches for optimal spark gap
• Flat seat type with 26.5 mm reach and 12 mm thread diameter
• Manufacturer heat range rating of 7
• Hex size of 14 mm for installation

Detailed Features of the NGK Laser Iridium Spark Plug

This NGK Laser Iridium Spark Plug 4912 features a fine iridium tip on the center electrode, which provides a stable and efficient spark while maintaining long service life. The copper core center electrode enhances electrical conductivity, contributing to improved ignition performance. The ground electrode uses a nickel core with a standard tip design and configuration, ensuring consistent spark delivery. The spark plug’s pre-gap is set at 0.044 inches, which is optimized for the compatible vehicle engines to maintain proper combustion. The flat seat design and 26.5 mm reach ensure proper fitment and sealing in the combustion chamber. Additionally, the non-removable nut terminal type simplifies installation and connection reliability.

About the NGK Laser Iridium Spark Plug Line

The Laser Iridium Spark Plug line by NGK is designed to provide precise ignition performance with durable iridium tips that resist wear and maintain spark efficiency over time. This product line focuses on combining advanced electrode materials with optimized design features to support fuel efficiency and engine responsiveness in a range of vehicles, including those from Toyota, Lexus, Pontiac, and Scion.

Compatible Vehicles and Common Applications

• Compatible with Toyota Corolla, Prius, Prius Plug-In, Prius V, Matrix, and xD models
• Suitable for Lexus CT200h
• Fits Pontiac Vibe and Scion iQ models
• Addresses ignition misfires and rough idling
• Helps resolve poor fuel economy and hard starts

Installation Notes and Tips

• Use a 14 mm socket for proper installation torque
• Verify the pre-gap of 0.044 inches before installation
• Ensure the spark plug seat is clean and free of debris
• Do not overtighten to avoid thread damage
• Check compatibility with vehicle make and model before installation

Quality Assurance and Warranty

NGK spark plugs, including the Laser Iridium Spark Plug 4912, are manufactured to meet strict quality standards for durability and performance. The use of iridium and copper materials ensures long-lasting ignition reliability. While specific warranty details may vary, NGK products typically come with manufacturer-backed quality assurance to support proper function and fitment.