Wagner Tuning Audi RS4 B9/RS5 F5 Radiator Hoses (OEM IC)

Wagner Tuning Radiator Hoses for Audi RS4 B9 / RS5 F5 (OEM Intercooler)

If you are upgrading the cooling system on your Audi RS4 B9 or RS5 F5, these Wagner Tuning radiator hoses are the natural companion to the Wagner competition water cooler kit. Designed specifically for the 2.9L V6 biturbo engine found in these models, the hoses are built to work with the OEM (standard factory) intercooler setup and ensure a clean, reliable connection throughout the indirect charge-air cooling circuit.

The 2.9L V6 biturbo in the RS4 B9 and RS5 F5 does not cool its charged air using ambient airflow in the traditional sense. Instead, it uses a dedicated water-based cooling circuit, sometimes called an indirect charge-air cooling system, to reduce the temperature of the air being fed into the engine. Keeping this circuit properly connected and leak-free is essential, particularly when upgrading other components such as the water cooler itself.

What These Hoses Do

These hoses replace or supplement the standard coolant hose routing within the charge-air cooling circuit. When fitting an upgraded Wagner Tuning competition radiator or water cooler, the OEM hoses may not always route or seal correctly due to slight dimensional differences in the upgraded components. These Wagner-specific hoses are designed to bridge that gap, ensuring a proper fit and a secure, leak-free connection throughout the system.

They are built to handle the pressures and temperatures associated with the RS4 and RS5 cooling circuit, and are designed to complement the Wagner competition cooling upgrade without requiring modification or improvisation.

Key Benefits

• Direct fitment with the Wagner Tuning competition water cooler kit on RS4 B9 and RS5 F5
• Maintains a sealed, leak-free indirect charge-air cooling circuit
• Built to withstand the temperatures and pressures of the 2.9L V6 biturbo cooling system
• Supports more consistent charge-air temperatures, helping the upgraded cooler perform as intended

Compatibility

These hoses are designed for use with the following vehicles:

• Audi RS4 B9 – 2.9L V6 Biturbo, 331 kW / 450 PS (2017 onwards)
• Audi RS5 F5 – 2.9L V6 Biturbo, 331 kW / 450 PS (2017 onwards)

Please use the vehicle lookup tool on this site or check the Vehicle Fitment tab to confirm compatibility with your specific model and build date before ordering.

Installation

These hoses are intended as part of a straightforward plug-and-play installation, in line with Wagner Tuning’s approach to their RS4/RS5 cooling upgrade range. It is strongly recommended that these hoses are fitted alongside the relevant Wagner Tuning competition water cooler kit to ensure correct fitment and system integrity. If you are unsure whether these hoses are required for your specific installation, refer to the Wagner Tuning fitment instructions included with your cooling kit.

These radiator hoses are a small but important part of getting the Wagner Tuning cooling upgrade working correctly on your RS4 or RS5. A properly sealed and routed cooling circuit means the upgraded water cooler can do its job effectively, helping to keep charge-air temperatures in check and supporting consistent engine performance, whether on the road or on track.