MSD 32733 Super Conductor 8.5mm Spark Plug Wire Set Black Big Block Chrysler 383-440 HEI

The MSD 32733 is a custom-fit 8.5mm Super Conductor spark plug wire set designed for Big Block Chrysler 383 and 440 engines equipped with an HEI-style MSD distributor. Purpose-built for bolt-on installation, this black wire set delivers maximum ignition performance with industry-leading low resistance and superior EMI suppression.

Ultra-Low Resistance Design:

MSD's Super Conductor wire technology achieves just 40–50 ohms of resistance per 12-inch length — the lowest of any helically wound spark plug wire. A copper alloy conductor is wound tightly around a special center core, with over 40 feet of conductor packed into every single foot of wire. This extreme winding density, combined with a ferro-magnetic impregnated center core, creates a highly effective EMI choke that contains electromagnetic interference within the wire and away from sensitive vehicle electronics.

Key Features:

• 8.5mm diameter Super Conductor wire construction
• 40–50 ohms resistance per 12 inches — lowest of any helically wound wire
• Copper alloy conductor for superior voltage transfer
• Ferro-magnetic impregnated center core for maximum EMI suppression
• Proprietary silicone/synthetic blend outer sleeve — highly resistant to heat, abrasion, and tears
• Dual Crimp terminals — one crimp for the sleeve, a separate crimp for the conductor
• Straight spark plug boots with HEI-style distributor terminal
• Custom-fit for Big Block Chrysler 383 and 440 with MSD HEI distributor
• Black jacket finish
• Street legal — compliant for use on emissions-controlled and non-emissions-controlled vehicles

The MSD 32733 wire set is the ideal upgrade for any Big Block Mopar B/RB-series engine build, ensuring full spark energy delivery to the plug while keeping ignition noise out of your vehicle's electronics.