aFe Twisted Steel Tri-Y Headers/Connection Pipes (Race) 01-16 Nissan Patrol (Y61) 4.8LIf you are looking to improve performance, throttle response, and enhance the sound to your vehicle, aFe POWER Twisted Steel headers is the answer. These headers are designed to increase exhaust velocity and increase usable torque, resulting in a more aggressive throttle response and increased passing power. Tuning may be required depending on application. Offers A Second Bung For Wide Band O2 Gauge Or Auxiliary Devices 2. 5in Connection Pipe Mount