Wanting to switch to 205/255/257 ignition coils in your 25D heads? This is the harness for you! 100% plug and play, replacing the factory ignition coil. Available for both styles of factory coil pack. These harnesses can be customized for full sequential or different coils upon request.
Note: this harness requires the Igniter on the firewall be deleted. Email us through our contact page with the exact year/model of your vehicle, and we'll let you know what wires need spliced together.
