NGK 52004 Spark Plug Wire Set

NGK Spark Plug Wire Set for OE-Style Ignition Service

The NGK Spark Plug Wire Set, part number 52004, is a vehicle-specific ignition wire set built for direct replacement service on select Ford, Mazda, and Mercury applications. It uses silicone insulation, a ferro mag core, and noise suppression construction to support stable spark delivery and reduced electrical interference.

Compatible with 2001 Ford Explorer, 2001 Ford Ranger, 2001 Mazda B4000, 1998-2001 Mercury Mountaineer, and 1997-2000 Ford Explorer, this NGK wire set is a fitment-based replacement for specific ignition service needs. The blue silicone jacket and 8.00 mm insulation outside diameter support durability in demanding underhood conditions.

Key Features

• NGK Spark Plug Wire Set, part number 52004
• Specific-fit ignition wire set for confirmed vehicle applications
• Blue silicone insulation for heat-resistant wire protection
• Ferro mag core material for ignition signal transfer
• Noise suppression construction to help reduce electrical interference
• 8.00 mm insulation outside diameter
• Cross-reference: Gates 52004

Product Details

NGK builds ignition components with OE-focused engineering and broad vehicle coverage for domestic and import platforms. This spark plug wire set is part of the NGK Spark Plug Wire Set line and is intended for direct replacement on the listed Ford Explorer, Ford Ranger, Mazda B4000, and Mercury Mountaineer applications. The RC-FDZ081 design identifier and specific-fit construction help ensure the correct routing and connection style for the confirmed vehicles.

For buyers searching for an NGK 52004 spark plug wire set for a 2001 Ford Explorer or 1998-2001 Mercury Mountaineer, this part provides a targeted ignition service solution. It is also listed for 2001 Ford Ranger and 2001 Mazda B4000 applications.

Common Issues This Part Can Address

• Misfires caused by worn or damaged ignition wires
• Hard starting related to weak spark transfer
• Rough idle from deteriorated wire insulation
• Electrical noise affecting ignition performance
• Heat-related wire breakdown in the engine bay

Installation Notes and Tips

Verify engine application and wire routing before installation. Match each lead to the correct cylinder and coil or distributor connection, and inspect adjacent ignition components for wear before replacing the wire set. Because this is a specific-fit part, confirm the vehicle year, make, and model against the listed fitment before ordering.

Quality Assurance

NGK is an established ignition component manufacturer with extensive OE experience and global automotive coverage. This wire set is produced to meet durability and operational performance expectations for replacement ignition service on the listed applications.