The factory pipe connecting the intercooler to the throttle body is made from brittle plastic. This kit replaces it with a higher-flow CTS Turbo aluminium charge pipe.
The 2.5″ diameter pipe improves flow and reliability on Audi S4/S5 B9 3.0T TFSI vehicles. The result can be quicker throttle response and reduced turbo lag.
Two water/methanol injection ports allow easy installation of injection nozzles.
Product details
- 2.5″ mandrel-bent aluminium pipe
- Billet aluminium throttle body insert
- Precision CNC-machined MAP sensor flange
- Robust black powder-coated finish
- 4-layer silicone coupler
- Stainless steel hose clamps
- 2 × 1/8″ NPT water/methanol ports with plugs
- Compatible with factory intercoolers and CTS Turbo intercoolers; compatibility with other aftermarket intercoolers is not guaranteed
- Replaces OE parts 8W0145673AQ and 8W0145673AE
Weight: 4.54 kg
Suitable for: Audi S4 VIII (B9), Audi S5 II (B9).
Compatible vehicles (manufacturer data)
| Vehicle | Chassis | Years | Engine |
|---|---|---|---|
| Audi S4 | — | 2018–2021 | — |
| Audi S5 | — | 2018–2021 | — |
Before ordering, check that the product matches your vehicle (model, year and engine). If in doubt, write to us — we will check for you.

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