NGK 51431 Spark Plug Wire Set, Ferro Mag Core, 7mm Blue Silicone

The NGK 51431 spark plug wire set (also called ignition wires or plug leads) carries high-voltage current from the ignition coil to the spark plugs. It is built to OE tolerances for dependable firing, noise suppression and long service life. NGK is known as The Ignition Specialist, and this set is a direct replacement for worn or failing ignition wires.

Key Features:

• Ferromagnetic (mag) core: ultra-low resistance for strong spark delivery and consistent performance
• Noise suppression: variable-pitch winding helps resist radio frequency interference
• Silicone insulation: 7mm diameter blue jacket, with high-temperature silicone and EPDM/silicone inner insulation for dielectric strength
• Stainless steel terminals: serrated crimps grip the cable jacket and inner insulation for high terminal retention
• Locking terminal: a corrosion-resistant, C-shaped spring clip secures the spark plug connection
• Silicone boot seal: 180-degree spark plug boot angle
• Cylinder lead ID tags: where possible, for easier installation
• NGK stock number: RC-GMX103

Replacing aging ignition wires helps restore smooth idle, throttle response and fuel efficiency. It also helps prevent misfires caused by cracked or high-resistance wires. The set is backed by a 1-year limited warranty.