Precision-engineered for compatibility with 1.8T 20V engines, these extension inserts seamlessly integrate into your fuel system, providing a reliable solution than stock plastic one. Crafted from billet aluminum, these inserts ensure durability and longevity, standing up to the rigors of engine operation and environmental factors. With their precise fit and robust construction, you can trust these inserts to deliver consistent performance mile after mile. Installation is straightforward, allowing for hassle-free integration into your existing fuel system. Whether you're a seasoned mechanic or a DIY enthusiast, our inserts are designed for easy installation, saving you time and effort. *Intake Manifold not included