NGK 6747 Spark Plug

NGK Iridium IX Spark Plug 6747 Overview

NGK Iridium IX Spark Plug 6747 is built for drivers who want precise ignition performance, stable combustion, and dependable service in a wide range of domestic and import applications. This spark plug uses an iridium center electrode, a nickel ground electrode, and a 0.032 pre-gap to support consistent firing characteristics.

NGK’s Iridium IX line focuses on fine-wire iridium construction and OE-level manufacturing standards. Part number 6747 is also identified as BR8EIX SOLID and is cross-referenced with Bosch 6747 for the same application.

Key Features

• Iridium center electrode tip for durable ignition performance
• Copper core center electrode for efficient heat transfer
• Nickel ground electrode with taper-cut tip design
• 0.032 pre-gap size for direct replacement use
• 5000 resistance rating
• 14.00 mm thread diameter, 0.75 reach, and flat seat design
• 13/16 hex size with non-removable nut terminal
• Heat range 8 for specified engine applications

Detailed Description

NGK 6747 is an Iridium IX spark plug engineered for ignition systems that require a fine-wire iridium firing tip and a standard flat-seat configuration. The copper core center electrode helps manage heat, while the nickel ground electrode and taper-cut tip support consistent spark delivery. With a 0.032 pre-gap and 5000 resistance, this plug is built for controlled ignition performance in the correct engine application.

For shoppers searching for NGK spark plug 6747, BR8EIX SOLID, or an iridium spark plug for Honda Civic, Toyota Corolla, or similar import and domestic engine platforms, this part provides a direct-spec replacement option where the listed dimensions and heat range match the vehicle requirements. NGK’s long OE supply history and broad coverage across automotive, motorcycle, marine, and small engine applications support its use in demanding ignition service.

What It Helps Address

• Hard starting caused by worn or fouled spark plugs
• Misfire conditions from weak or inconsistent spark output
• Rough idle related to degraded ignition performance
• Reduced throttle response from aging plugs
• Maintenance replacement for engines calling for NGK 6747 specifications

Installation Notes and Tips

Verify thread diameter, reach, seat type, heat range, and pre-gap before installation. Use the vehicle service specification for final gap verification and torque procedure. This spark plug fits applications that call for a 14 mm thread, 0.75 reach, flat seat, and 13/16 hex, so confirm those details against the engine requirements before installing in Honda Civic, Toyota Corolla, or other listed-fitment vehicles.

For best results, inspect ignition coils, plug wires, and related secondary ignition components during service. If the engine uses a specified plug type or heat range, match those requirements exactly to avoid drivability issues.

Quality Assurance

NGK is a major OE supplier and manufacturer with more than 80 years of automotive experience. Its spark plugs are produced to support original equipment standards for durability and operational performance across a broad range of vehicle applications.