NGK 52251 Spark Plug Wire Set

NGK Spark Plug Wire Set for OE-Style Ignition Service

NGK Spark Plug Wire Set 52251 is a specific-fit ignition wire set built for select Ford and Mercury applications. It uses blue silicone insulation, noise suppression, and an SMag core to support stable spark delivery and cleaner ignition performance.

For drivers servicing a Ford Taurus, Ford Aerostar, Ford Probe, Ford Tempo, Mercury Sable, or Mercury Topaz, this NGK wire set provides a direct replacement option engineered around OE-level fitment requirements. Part number 52251 is also referenced as RC-FDZ010.

Key Features

• Specific-fit spark plug wire set for select Ford and Mercury vehicles
• Blue silicone insulation for heat resistance and durability
• Noise suppression design helps reduce ignition interference
• SMag core material supports consistent spark transfer
• 8.00 mm insulation outside diameter
• NGK Spark Plug Wire Set line backed by more than 80 years of ignition-focused manufacturing experience

Product Details

NGK 52251 is part of the NGK Spark Plug Wire Set product line, which focuses on ignition components built to meet OE standards for durability and operational performance. NGK’s ignition expertise spans spark plugs, glow plugs, ignition coils, coil-on-plug boots, and wire sets, giving this product line a strong OE-service foundation for domestic and import vehicles. This part cross-references Bosch 9619 for the same application.

Compatible With 1986-1990 Ford Aerostar, N/A; 1986-1990 Ford Taurus, N/A; 1990-1992 Ford Probe, N/A; 1992-1994 Ford Tempo, N/A; 1986-1994 Mercury Sable, N/A; and 1992-1994 Mercury Topaz, N/A. If you are replacing worn ignition wires on a Ford Taurus or Mercury Sable, NGK 52251 is a direct-fit service part for the listed applications.

Common Issues This Part Can Address

• Misfires caused by deteriorated ignition wires
• Hard starting related to weak spark delivery
• Rough idle from damaged or aged wire insulation
• Ignition noise interference in the electrical system
• Performance loss from cracked or heat-aged plug wires

Installation Notes and Tips

Verify engine application and wire routing before installation. Match each lead to the correct cylinder and coil or distributor terminal, and inspect boots, terminals, and adjacent ignition components for wear while servicing the set. For best results, replace worn spark plugs at the same time if they are due for service.

Quality Assurance

NGK manufactures premium ignition products to OE-level durability and performance expectations. Part number 52251 reflects NGK’s focus on precise fitment, dependable materials, and ignition-system service for select Ford and Mercury vehicles.