BOSS Turbo Inlet Pipe for B9/9.5 Audi S4/S5 3.0T

The CTS Turbo BOSS Turbo Inlet Pipe is designed as a performance upgrade for the B9/9.5 Audi S4/S5 3.0T models. It features a larger internal diameter than the factory inlet pipe, while carefully maintaining proper clearance for the PCV system and electrical harness, along with factory mounting locations. This turbo inlet pipe is constructed from high-flow cast aluminum and includes removable turbo adapters to accommodate different turbocharger setups. It is precision-machined for accurate fitment and offers factory-style PCV connections. The package includes new turbocharger adapters, o-rings, and allen-head bolts for a straightforward installation. Adapters for 52mm (stock/factory turbo), 63mm (Pure750 or similar), and 66mm (CTS Turbo BOSS800/TTE710/TTE810 or similar) turbo inlets are provided. Installation is made seamless with included silicone couplers, offering compatibility with the factory airbox or the CTS Turbo S4/S5 intakes IT-290R and IT-964. This design eliminates the need for additional adapters or couplers. The inlet pipe features a slotted mounting hole for easier installation of the lower screw. This turbo inlet pipe is specifically designed for 2018–2024 B9/B9.5 Audi S4 3.0T and 2018–2024 B9/B9.5 Audi S5 3.0T vehicles, provided they are equipped with either the factory intake or a CTS Turbo intake (IT-290R or IT-964).