NGK 3089 Spark Plug

NGK Iridium IX Spark Plug 3089 Overview

NGK Iridium IX Spark Plug 3089 is built for precise ignition performance in applications that call for a 14 mm, flat-seat plug with a .75 reach and 13/16 hex. It uses an iridium center electrode tip, a nickel ground electrode, and a 5,000 ohm resistor to support stable spark delivery and reduced electrical interference.

For drivers searching for an NGK spark plug for Honda Civic, Toyota Corolla, or similar import applications, part number 3089 offers OE-focused construction backed by NGK’s long history as a major original equipment supplier.

Key Features

• Iridium center electrode tip for consistent ignition performance
• Copper core center electrode for efficient heat transfer
• Nickel ground electrode with taper-cut tip design
• 5,000 ohm resistor for radio-frequency noise suppression
• Pre-gapped to .032 for common ignition setups
• Flat seat design with 14 mm thread diameter and .75 reach
• NGK part number 3089, also referenced as BR9EIX SOLID

Product Details

The NGK Iridium IX line is engineered around fine-wire iridium technology to promote reliable spark initiation and long service life in demanding ignition systems. This plug combines an iridium tip with a copper-core center electrode and a standard nickel ground electrode, giving it a balanced design for everyday drivability and consistent combustion. The heat range 9 specification, non-removable nut terminal, and solid construction make it a direct-fit style choice for many performance and import engine applications. This part cross-references Anchor 3089 for the same application.

When you need an NGK 3089 spark plug for Honda Civic or NGK 3089 spark plug for Toyota Corolla search results, this Iridium IX plug is a strong match for buyers comparing OE-style ignition components by thread size, seat type, and heat range.

Common Issues This Part Can Address

• Hard starting caused by worn or inconsistent spark plugs
• Rough idle from weak ignition output
• Misfire symptoms related to electrode wear
• Reduced throttle response from degraded spark quality
• Ignition noise concerns in sensitive electrical systems

Installation Notes

Verify thread diameter, reach, seat type, heat range, and pre-gap before installation. Use the specified gap setting for the engine, and inspect coil boots, plug wires, and ignition components at the same time to avoid repeat misfire concerns. Thread the plug by hand first to prevent cross-threading in the cylinder head, then torque to the vehicle manufacturer’s specification.

Compatible With vehicles that call for NGK part number 3089 or BR9EIX SOLID, including applications searched as Honda Civic spark plug replacement and Toyota Corolla ignition service where the listed plug dimensions match the engine requirements.

Quality Assurance

NGK is a long-established OE supplier with broad coverage across domestic and import vehicles, motorcycles, marine engines, and small engine applications. Its manufacturing and distribution network supports consistent product standards for ignition components built to original equipment expectations.