Low Resistance = More Spark
The MSD 8.5mm Super Conductor Wire is the most well known performance spark plug wire. Engineered to perform, the Super Conductor offers incredibly low resistance without electronic interference. In a single foot of Super Conductor Wire there is only 40-50 ohms of resistance. That is the lowest resistance of any helically wound wire. To accomplish this MSD uses a copper alloy conductor due to it's great voltage carrying capabilities.

Designed to Perform
The low resistance of the Super Conductor wire results in less loss in spark energy so more reaches the spark plug. The conductor is wound extremely tight around a special center core. There is over 40 feet of conductor wrapped into a single foot of plug wire. This winding procedure combined with a ferro-magnetic impregnated center core produces an extremely effective Electro Magnetic Interference (EMI) "choke". This choke or suppression capability keeps the EMI inside the wire where it cannot interfere with other electronics on your vehicle. The outer sleeve that surrounds the conductor assembly is a proprietary blend of silicone and synthetic material that is highly resistant to heat as well as abrasion and tears.

Fits
2003-2005 Ram Truck 5.7L V8