These custom spark plug wire are designed to fit the Ford Kent 1600 engine. They feature a spiral-wound suppression core for low resistance and minimum spark loss. They have tough silicone insulation to withstand high temperatures and voltage loss for minimum crossfire, and are highly resistant to fuels, oils, and solvents. Other features include 135 degree plug boots (most applications), straight coil boot on, 9.0 mm diameter wires, and silicone boot material on both ends. Available only in black.