MSD 34063 Super Conductor 8.5mm Universal Replacement Spark Plug Wire Black

The MSD 34063 is a universal replacement Super Conductor 8.5mm spark plug wire in black, designed for custom-length applications where a single wire needs to be replaced or routed to a specific length. Sold individually, this wire delivers the same proven Super Conductor technology found in MSD's full wire sets.

At 48 inches long, the wire provides ample length to trim and terminate for virtually any engine configuration. It ships with a multi-angle terminal and boot on the spark plug end and a 90° HEI-style terminal on the distributor end, along with a 90° socket terminal, boot, and a mini stripper/crimper tool so the wire can be custom tailored to your exact routing needs.

Super Conductor Wire Technology:

• Ultra-low resistance spiral core — just 40–50 ohms per foot for maximum spark energy delivery
• RFI suppression equivalent to a 1,500-ohm wire — tightly wound copper helically wound around a ferro-magnetic center core creates an effective EMI choke
• EMI containment — keeps electromagnetic interference inside the wire, protecting sensitive vehicle electronics
• 8.5mm synthetic/silicone outer jacket over an extra-heavy glass braid for superior heat resistance and abrasion protection
• Dual crimp stainless steel snap-lock terminals under high-temperature silicone boots for a secure, reliable connection
• Black wire with gray silicone boots — clean, performance appearance
• Sold individually — ideal for replacing a single damaged wire or custom builds

The MSD 34063 Super Conductor replacement wire is the go-to solution for custom ignition builds, engine swaps, or any application where a pre-made wire set won't fit. Trim it to length, crimp on your terminal, and get maximum ignition performance from every spark.