Spark Plug Wire Set for 1977-1981 Ford F-150 & More - MSD 31339

Help send a strong spark to every cylinder using the MSD IGNITION spark plug wire set (P/N 31339), a custom 8.5mm set cut to exact specifications for Ford engines with HEI boots. It's a direct-fit replacement for the listed applications, including the 1977-1981 Ford F-150 5.8L / 6.6L, 1977-1982 Ford F-250 5.8L / 6.6L and 1978-1981 Ford Bronco 5.8L / 6.6L, and many more Ford, Lincoln, and Mercury V8-5.8L and V8-6.6L models — see the Buyer's Guide tab for the full list.

• Super Conductor wire: a copper alloy conductor wound tightly around a special center core delivers incredibly low resistance (only 40-50 ohms per 12 inches), so less spark energy is lost on the way to the plug.
• EMI suppression: a ferro-magnetic impregnated center core acts as an effective choke, helping keep electromagnetic interference inside the wire and away from other vehicle electronics.
• Durable outer sleeve: a proprietary silicone and synthetic blend resists high heat, abrasion, and tears.
• Dual Crimp terminals: two separate crimps grip the sleeve and the conductor; finished in red with Multi-Angle HEI boots.

Pre-cut for a custom, bolt-on fit. Country of origin: Mexico.