Experience the perfect blend of performance and compliance with the Audi R8 4.2 V8 Exhaust Manifolds Catalytic Converters. Specifically designed for your Audi R8, these catalytic converters are engineered to meet the stringent emission standards while enhancing your vehicle's power and efficiency. The OEM part numbers 420251211X and 420251212X ensure a precise fit and compatibility with your car's system.Crafted with the highest quality, these catalytic converters are an essential upgrade for your Audi R8. They are designed to reduce emissions and improve your vehicle's overall performance. Make the most of your driving experience with a set that offers both reliability and an edge in power.