Upgrade your car's performance with the Aeroflow AF999-04D Aluminium Weld-On Male AN Fitting. This durable and high-quality fitting is designed to provide a secure and leak-free connection between your car's fuel, oil, or coolant lines. Made from premium-grade materials, this -4AN fitting is built to last and comes with a 1-year warranty from the trusted brand, Aeroflow. With its easy weld-on installation, this fitting is a great addition for any car enthusiast looking to improve their vehicle's performance.