Moroso 73661 Ultra Custom Fit Spark Plug Wire Set - 40

The Moroso 73661 Ultra 40 Custom Fit Wire Set delivers high-performance ignition with advanced materials engineered for extreme conditions. Built with a unique multi-layer construction, these spark plug wires feature a Kevlar center core wrapped in a ferrite impregnated core for superior electromagnetic interference (EMI) suppression and exceptional durability.

Key Features:

• Nickel copper alloy conductor with conductive polymer coating for maximum conductivity and spark energy
• High-temperature silicone jacket protects against heat up to 600°F, ideal for headers and turbocharged applications
• Locking stainless steel terminals with fold-over crimping ensure secure, vibration-resistant connections
• High-temperature silicone boots resist cracking and provide superior insulation
• Ferrite impregnated core reduces EMI and RFI interference for clean spark delivery
• Kevlar center core adds tensile strength and prevents wire stretching during installation
• Custom fit design for precise routing and OEM-quality appearance

Moroso's Ultra 40 wire sets combine race-proven technology with street reliability, making them an excellent choice for performance street cars, race applications, and vehicles operating in high-heat environments. The multi-layer construction resists oil, fuel, and chemical contamination while maintaining consistent performance.