Brand New MSD Spark Plug Wire Set, Red Jacket, 8.5mm Diameter, 12 inch Length, 40-50 Ohms per foot, Compatible with 1999 GM LS Truck Engines (Holley Part #32829) Engineered from the inside out, the 8.5 offers everything you have ever wanted in a wire, such as incredibly low resistance without electronic interference! In a single 12" length of Super Conductor Wire there is only 40 - 50 ohms of resistance! That is the lowest resistance of any helically wound wire. We use a copper alloy conductor due to great voltage carrying capabilities. The low resistance 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 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 & synthetic material produce a sleeve that is highly resistant to high heat as well as abrasion & tears. MSD 8.5mm spark plug terminals feature Dual Crimp terminals. The terminals feature 2 crimps; 1 for the sleeve of the wire, 1 for separate crimp to grasp the conductor. Features: Custom fit for make & models Wires are pre-cut to exact specifications Bolt-on performance Specs: Application: GM LS Engines Boot Material: Silicone Color: Red Core: Copper Length: 12" Product Type: Spark Plug Wire Resistance: 40-50 Ohms Per Foot Spark Plug Boot Angle: Multi-Angle Wire Diameter: 8.5mm Wire Series: 8.5 Super Conductor