Recommended Upgrade - The 12663577 LT4 Fuel Line is an ideal choice for ensuring optimal clearance when installing BTR Trinity Intake manifolds on Gen V LT1, L83, and L86 engines. It is also commonly used when upgrading to LT4 High-Pressure Fuel Pumps (HPFP) and injectors on non-LT4 Gen V engines for improved fuel delivery and performance Equivalent Replacement - Guarantees reliable, factory-standard fuel system function for Chevrolet Camaro ZL1 LT4 engines (2017-2024) and for Cadillac CTS-V (2016-2019), offering a direct replacement part to maintain optimal performance and ensure proper fuel delivery Critical Component - The fuel feed line is essential for delivering fuel correctly to the engine, ensuring consistent fuel pressure and flow to the injectors, which is crucial for the LT4 engine's performance in both everyday use and high-performance setups Seamless Fuel Flow - The 12663577 fuel line transfers fuel from the fuel pump to the engine, working in harmony with the fuel pump and injectors to maintain consistent fuel flow and pressure, optimizing fuel delivery for enhanced engine performance Trusted Service and Verified Quality - Buy with confidence from Bzcovac! You'll receive a brand-new product in its original packaging. We aim to enhance efficiency, reduce costs, and save time, enabling you to focus on what matters most. Find your replacement parts here The 12663577 fuel line is a critical component in your engine's fuel system, designed to transfer fuel from the fuel pump to the engine. It is fed by the fuel pump, passes through a fuel filter to remove impurities, and then delivers fuel to either the carburetor or fuel injectors. Built for durability, it ensures consistent fuel flow and pressure, supporting optimal engine performance and efficiency. Ideal for both replacement and performance upgrades, this fuel line is essential for smooth fuel delivery and maintaining engine reliability.