SUMAX Spark Plug Wires - Blue - FLT 77633

Spark plug wires are a critical ignition component that directly impacts engine reliability and performance. Stock or worn wires introduce excessive resistance, causing weak spark delivery, poor combustion, and premature failure. The SUMAX Spiro-Pro core delivers up to 10 times the conductivity of standard carbon-core wires, ensuring consistent, hot spark at the plug while running significantly cooler for extended service life.

These precut, ready-to-install wires feature extra-high-temperature silicone construction rated to 600°F, eliminating the durability issues common with lower-grade materials. Whether you're running electronic or points-based ignition, you get three to four times longer lifespan and the distinctive blue color makes ignition diagnostics and engine bay identification effortless. Built in the U.S.A. with precision terminals and boots already installed—simply bolt them on and go.

• Spiro-Pro core
• 10x better conductivity
• 600°F silicone construction
• 3-4x longer lifespan
• Low resistance design
• Precut, fully assembled
• Plug and coil boots included
• Electronic and points compatible
• Made in U.S.A.
• Distinctive blue color