For Thunderbolt GM Ignition

Mega-Mag, 8mm MEG-103 Sierra® Brand

• Thunderbolt small block marine spark plug wire set
• Fits Mercruiser 305 and 350 cu. in. marine engines from 1983-98 with Thunderbolt ignition systems
• Includes ignition coil wire
• 8mm blue SSC 100% Silicone wire for ultra low resistance of 270 Ohms per foot
• Carbon-latex coating for superior EMI/RFI suppression
• Heavy duty booting used to maintain dielectric properties
• Stainless steel and brass terminals for longevity and superior conductivity
• Replaces Mercury 84-816761Q4, 84-43376A4, 84-816761T4, 84-813720A4, & 84-816761A4