NGK 54401 Spark Plug Wire Set RC-EUC047 Silicone Ignition Wires

The NGK 54401 spark plug wire set (also listed as RC-EUC047) is an ignition wire set that carries high-voltage current from the ignition coil and distributor to the spark plugs. NGK builds it to OE-style standards, and the wires, which some people call plug leads or ignition cables, use OEM-specified spark plug and distributor boots.

Key Features:

• 7mm, 29 gauge galvanized copper core ignition cable
• High-temperature silicone outer jacket that resists underhood temperatures up to 250°C (482°F)
• Jacket also resists moisture, oil and fuel, and cracking from temperature extremes
• High-density fiberglass braid reinforcement over EPDM/silicone inner insulation for strong dielectric strength and cable tensile strength
• Positive-locking, corrosion-resistant stainless steel terminal ends hold tight and resist vibration
• Silicone seal at the spark plug boot
• Numbered for easy cylinder identification, with color-coded coil wires to simplify installation

Replacing worn or cracked ignition wires helps restore a consistent spark. It can also help with misfires, rough idle and hesitation caused by high-voltage leakage. Cross-references include Standard Motor Products 55771 and 7872, Bosch 09027, BWD CH7825 and Denso 671-8137.