- Precut and have the plug/coil boots and terminals already installed
- Boots and wires are made from extra-high-temperature silicon, which gives protection up to 600°F
- Spiro-Pro core provides up to 10 times the conductivity of a standard carbon-core wire
- Low resistance means they run cooler and last three to four times longer than carbon-core wires
- Made in the U.S.A.
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