Standard Motor Products 8mm Copper Core Spark Plug Wire – 25ft Spool (Bulk Wire Only)

Need to make your own custom spark plug wires?

This is the bulk wire to do it.

It's a 25-foot spool of 8mm copper core wire from Standard Motor Products.

Just the wire itself—no terminals or boots.

Perfect for custom applications, classics, or repairs.

Good old-fashioned copper core for solid conductivity.

If you're building a custom set, this is your starting point.