MSD Super Conductor Spark Plug Wire Set 8.5mm Red 90° Boots HEI Small Block Chevy 31359

Spark plug wires are the critical link between your ignition system and combustion chamber—weak conductivity means lost power, missed timing, and unreliable performance. The MSD 31359 eliminates that weakness with a precision-engineered wire set built specifically for Small Block Chevy engines, delivering consistent spark energy with minimal loss and EMI interference. If you're rebuilding, upgrading, or maintaining a serious small block, these wires belong under your hood.

MSD's copper alloy conductor minimizes resistance at 40-50 ohms per foot, ensuring maximum spark energy reaches each plug exactly when it needs to. The ferro-magnetic center core acts as an EMI choke, suppressing electronic noise that can degrade ignition timing and engine management signals. Over 40 feet of conductor wound into each foot of wire provides exceptional durability and consistent performance through heat cycles and high-RPM operation. Precut to exact specifications for Small Block Chevy HEI applications, these wires are a direct bolt-on installation with zero guesswork. The dual-crimp terminal design—one crimp securing the wire sleeve, one for the conductor—ensures a rock-solid connection that won't loosen or corrode.

• 8.5mm wire diameter
• 90-degree silicone boots
• Red color
• Copper alloy core
• 40-50 ohms/foot resistance
• Ferro-magnetic EMI suppression
• Heat and abrasion resistant
• Dual-crimp terminals
• Small Block Chevy specific
• HEI-style terminal compatible
• Precut, bolt-on installation
• Limited 1-year warranty