Spark Plug Wire Set-Base MSD 5550mpn : 5550 wire resistance : 500 Ohms Per Foot Resistance brand : MSD Ignition manufacturer part number : 5550 distributor boot color : Black distributor boot material : Silicone and Synthetic wire material : Silicone and Synthetic california prop 65 warning : This product can expose you to chemicals which are known to the State of California to cause cancer and/or birth defects or other reproductive harm. For more information visit www.P65Warnings.ca.gov spark plug boot material : Silicone diameter (mm) : 8 Millimeter upc : 085132055500 assembled : No spark plug boot ends : Straight manufacturer warranty : Manufacturer's Warranty rfi suppression : Yes conductor type : Kevlar Core color : Black distributor terminal ends : HEI includes coil wire : Yes spark plug boot color : Black