Moroso 73826 Moroso GM LS Ignition Wire Set - Ultra 40 - Sleeved - Coil-On - 12in Wire - BlackMoroso 73826 Moroso GM LS Ignition Wire Set Ultra 40 Sleeved Coil On 12in Wire Black Ultra 40 Custom Fit Wire Set, Black Wire, Sleeved, GM LS Series Coil on Plug Boots, Long Exterior sleeving offers improved dielectric strength for added resistance to outside pulses while electrical protecting wire against heat, chafing and contaminants 7mm diameter wire with 40 ohms of resistance per foot Sleeving adds extra dielectric strength Sleeving extends spark