NGK 52031 Spark Plug Wire Set

NGK Spark Plug Wire Set for Ford and Mercury

The NGK Spark Plug Wire Set, part number 52031, is a specific-fit ignition wire set built for select Ford Explorer, Ford Explorer Sport Trac, and Mercury Mountaineer applications. It uses silicone insulation, a ferro mag core, and noise suppression to support stable ignition performance and reduced electrical interference.

Key Features

• Specific-fit NGK spark plug wire set for confirmed vehicle applications
• Blue silicone insulation for heat resistance and durability
• Ferro mag core construction
• Noise suppression type included
• 8.00 mm insulation outside diameter
• NGK part number 52031 / RC-FDZ091

Product Details

NGK Spark Plug Wire Set 52031 is part of the NGK Spark Plug Wire Set line, backed by NGK’s long OE-focused ignition experience and broad coverage for domestic and import vehicles. This wire set is built to meet OE-level durability and operational performance expectations, making it a direct replacement choice for ignition service on 2002-2010 Ford Explorer, 2007-2010 Ford Explorer Sport Trac, and 2002-2010 Mercury Mountaineer models. This part cross-references DENSO Auto Parts 671-6265 for the same application.

What It Helps Address

• Misfires caused by worn or damaged plug wires
• Hard starting related to weak ignition transfer
• Rough idle from inconsistent spark delivery
• Radio-frequency interference in the ignition system
• Voltage leakage from aging insulation

Installation Notes and Tips

Verify cylinder routing before removal and replace wires one at a time when possible to preserve firing order. Inspect spark plugs, coil connections, and boots during service, and confirm the wire set is routed away from hot or moving components. Compatible With 2002-2010 Ford Explorer, 2007-2010 Ford Explorer Sport Trac, and 2002-2010 Mercury Mountaineer applications. The NGK 52031 wire set is a specific-fit replacement, so match the vehicle application and connector routing before installation.

Quality Assurance

NGK manufactures ignition components to OE-focused standards using global automotive engineering and production experience. The 52031 spark plug wire set reflects NGK’s emphasis on durability, fitment accuracy, and consistent ignition performance for service replacement use.