Cast Turbo Inlet Pipe

The Integrated Engineering IEINCK4 turbo inlet pipe is designed to enhance airflow for Audi B9/B9.5 S4 and S5 models equipped with the 3.0T V6 turbocharged engine. Manufactured from cast aircraft-grade aluminum and precisely CNC-machined in-house, this pipe maximizes the available space within the engine bay for improved performance. Featuring a 4" effective inner diameter cross-section, the IEINCK4 offers a 23% increase in flow over the stock turbo inlet. When paired with an IE intake system, it can provide up to 19HP and 21 ft-lbs of torque. The design supports hybrid turbo upgrades and is adaptable to stock or various aftermarket turbos through separately sold adapter rings. The pipe connects directly to stock and popular hybrid turbos with O-ring sealed flanges for a leak-free seal. Fitment is confirmed for 2017-2024 Audi S4 and S5 3.0T models. Fitment is not verified on non-IE brand intakes without modification; purchase is at your own risk.