NGK 4867 Spark Plug

NGK Laser Iridium Spark Plug 4867 Overview

NGK Laser Iridium Spark Plug 4867 is built for precise ignition performance in select Mitsubishi, Toyota, and other OE applications. This spark plug uses an iridium center electrode, nickel ground electrode core, and a 0.032 in pre-gap to support consistent spark delivery in engines that call for a flat-seat, 14 mm plug with a 5/8 hex.

The Laser Iridium line focuses on OE-style fit and durability, making it a strong choice for drivers servicing a Mitsubishi Eclipse, Mitsubishi Galant, Toyota Sequoia, or Toyota Tundra with the specified factory-style plug requirements.

Key Features

• NGK Laser Iridium Spark Plug, part number 4867
• Iridium center electrode tip for stable ignition performance
• Nickel ground electrode core with standard ground configuration
• Pre-gapped to 0.032 in
• Flat seat design with 14.00 mm thread diameter and 0.75 in reach
• 5,000 ohm resistance and non-removable nut terminal
• Manufacturer heat range 6
• OE-style spark plug construction for select import and domestic applications

Detailed Description

NGK 4867, also identified as IFR6B-K, is a Laser Iridium spark plug engineered around OE specifications for engines that require a 14 mm thread, flat seat, and 0.032 in gap. The iridium center electrode helps maintain a consistent spark point, while the copper core and nickel ground electrode support reliable heat transfer and ignition stability. This makes the plug a direct-service option for vehicles such as the 2006-2012 Mitsubishi Eclipse, 2007-2009 Mitsubishi Galant, 2001-2004 Toyota Sequoia, and 2000-2004 Toyota Tundra.

NGK’s OE manufacturing background and broad North American coverage are reflected in this plug’s factory-style dimensions and application-specific tuning. This part cross-references Bosch FR6KI332S and DENSO Auto Parts 4504 for the same application.

Common Issues This Spark Plug Can Address

• Hard starting caused by worn or fouled spark plugs
• Rough idle from inconsistent ignition output
• Misfire codes tied to degraded plug electrodes
• Reduced throttle response from weak spark delivery
• Service replacement for plugs at the OE-recommended interval

Installation Notes and Tips

• Fits 2006-2012 Mitsubishi Eclipse, N/A; gap 0.032"; actual OE manufacturer; 105,000 mi OE Mfr recommended service interval; Laser Iridium Spark Plug
• Fits 2007-2009 Mitsubishi Galant, N/A; gap 0.032"; actual OE manufacturer; 105,000 mi OE Mfr recommended service interval; Laser Iridium Spark Plug
• Fits 2001-2004 Toyota Sequoia, N/A; adjust spark plug gap to 0.032 inches; Laser Iridium Spark Plug
• Fits 2000-2004 Toyota Tundra, N/A; adjust spark plug gap to 0.032 inches; Laser Iridium Spark Plug
• Verify engine application, thread reach, seat type, and gap before installation
• Use the specified torque procedure for the engine to help prevent thread or insulator damage

Quality Assurance

NGK is a long-established OE supplier and manufacturer of spark plugs for domestic and import vehicles in North America. Part number 4867 is produced to original-equipment standards for durability and operational performance across its listed applications.