NGK 9578 Spark Plug Wire Set

NGK Spark Plug Wire Set for Honda Applications

The NGK Spark Plug Wire Set 9578 is a specific-fit ignition wire set built for select Honda Accord and Honda Prelude applications. It uses silicone insulation, a blue outer jacket, and a noise-suppression design to support stable ignition performance and cleaner signal delivery.

Key Features

• Specific-fit spark plug wire set for confirmed Honda applications
• Silicone insulation for heat resistance and durability
• Blue insulation color for easy visual identification
• Mag (variable pitch) core material
• Noise suppression type included
• 7.00 mm outside diameter
• NGK part number 9578 / RC-HE62

Product Details

NGK Spark Plug Wire Set 9578 is part of NGK’s ignition product line, which focuses on OE-style replacement components for domestic and import vehicles. NGK draws on decades of ignition engineering and global OE experience to produce replacement ignition parts that meet durability and operational performance expectations for everyday driving. This wire set is built as a specific-fit replacement for 1992-1997 Honda Accord and 1992-1996 Honda Prelude models, making it a direct match for owners searching for a Honda Accord spark plug wire set or Honda Prelude ignition wire replacement.

This part cross-references DENSO Auto Parts 671-4174 for the same application.

What It Helps Address

• Misfires caused by worn or damaged ignition wires
• Hard starting related to weak spark delivery
• Rough idle from inconsistent ignition signal transfer
• Radio-frequency interference from aging suppression components
• Cracked or heat-damaged wire insulation

Installation Notes and Tips

Verify engine layout and wire routing before removal so each lead returns to the correct cylinder and coil connection. Inspect boots, terminals, and adjacent ignition components during installation, and confirm the wires are fully seated to maintain proper spark transfer. For best results, replace worn wires when diagnosing ignition performance issues on a 1992-1997 Honda Accord or 1992-1996 Honda Prelude.

Quality Assurance

NGK manufactures premium ignition products to OE standards using controlled production and distribution systems in North America and globally. The 9578 wire set reflects NGK’s focus on durability, fit, and consistent ignition performance for replacement use.