DeatschWerks 01-09 Audi S4/RS6/S6 4.2L V8 750cc Injectors - Set of 8

When you're pushing your Audi S4's 4.2L V8 engine beyond stock, especially if you've added a turbo or supercharger, the factory fuel injectors might not be able to keep up. These DeatschWerks injectors are rated at 750cc per minute, offering a significant increase in fuel flow to support those performance modifications. They come as a matched set of eight, ensuring each cylinder receives the precise amount of fuel needed for optimal performance and engine health.

DeatschWerks is known for its high-performance fuel system components, and these injectors are built to handle demanding applications. Being a matched set is crucial; it means the flow rate for each injector has been calibrated to be within a very tight tolerance of the others. This consistency is key for smooth engine operation, proper air-fuel ratios, and maximizing the power gains from your engine upgrades. While they are designed as a direct fit for many Audi models, it's always a good idea to confirm compatibility with your specific setup, especially if you've modified the fuel rails or intake manifold.

If you're planning on tuning your S4, RS6, S6, or S8 for more power, upgrading your fuel injectors is a fundamental step. These 750cc injectors from DeatschWerks provide the headroom needed for significant performance tuning. Keep in mind that these injectors are not CARB approved and cannot be shipped to California. You'll also want to ensure your fuel pump and tuning are adequate to support the increased fuel flow these injectors can provide.