Twin Power Ignition Coil For EFI Harley Touring Features: High-quality, molded-epoxy coils for 12-Volt ignition systems increases peak spark voltage by 20 or more In a late OEM-style molded case, these ignition coils improve starting, stops high-speed misfires, increases mileage and overall performance Come with a one-year manufacturer's warranty OEM Replacement 31639-95 Note: Fits EFI models only