MSD 31889 Red Super Conductor 8.5mm Universal Spark Plug Wire Set Ford 4.6L/5.4L

The MSD 31889 Red Super Conductor Universal Spark Plug Wire Set is engineered for Ford Modular 4.6L and 5.4L engines, giving performance enthusiasts the flexibility to custom-build their wire routing from extra-long, pre-cut lengths. Each wire comes with the spark plug terminal and boot pre-installed, with the opposite end open so you can cut to the exact length needed for your specific application.

Superior Conductor Technology:

• Ultra-low resistance: Helically wound core delivers just 40–50 ohms of resistance per foot — the lowest of any spiral-wound wire — ensuring maximum spark energy reaches the plugs
• 40 feet of conductor per foot of wire: Tightly wound copper alloy conductor minimizes energy loss while maintaining outstanding conductivity
• Ferro-magnetic center core: Combined with the spiral winding, this produces an effective EMI choke that keeps electromagnetic interference contained inside the wire and away from sensitive electronics
• RFI suppression equal to a 1,500-ohm wire — without the resistance penalty
• 8.5mm diameter outer jacket: Tough synthetic/silicone sleeve over an extra-heavy glass braid and dielectric insulator for maximum heat resistance and durability

Universal Fit Design:

• Extra-long wire lengths allow you to custom-cut each wire for precise routing
• Wire lengths included: 2 × 55", 4 × 45", 2 × 40", plus one 40" coil wire
• Distributor cap boots and terminals included — cut wire to length, then install the terminal using the included tool
• Dual crimp stainless steel terminals with snap-lock high-temperature boots ensure a secure, vibration-resistant connection
• Clip-on cylinder number markers included for easy wire identification

What's Included:

• 8 spark plug wires (pre-installed spark plug boots and terminals)
• 1 coil wire
• Distributor cap boots and terminals
• MSD Mini-Stripper-Crimper tool
• Cylinder identification markers

The MSD 31889 is the ideal choice for Ford Modular engine builds where custom wire routing is preferred. The included Mini-Stripper-Crimper makes the termination process straightforward, delivering a clean, professional installation with race-proven MSD ignition performance.