Enhanced Cooling for the Iconic Audi B5 S4

The Audi B5 S4 is a legend, but its cooling system can struggle under the heat generated by modern tuning and track use. The CSF High-Performance All-Aluminum Radiator is the ultimate upgrade to ensure your S4 stays cool under pressure. By replacing the aging factory unit with CSF’s advanced aluminum technology, you gain improved thermal efficiency and long-term reliability.

Advanced B-Tube Technology

CSF’s exclusive B-Tube technology sets this radiator apart from standard aftermarket replacements. Unlike traditional "O" shaped tubes, the B-tube design provides a larger surface area for heat transfer while allowing for a thinner, lighter aluminum construction. This results in a radiator that is not only more efficient at cooling but also more durable against the vibration and thermal cycling common in turbocharged engines.

• Perfect Fitment: Designed specifically for 1997-2002 Audi S4 (B5) models, including Avant and Base.
• 2-Row Core: Significantly increases cooling capacity over the stock single-row unit.
• All-Aluminum Construction: Eliminates plastic end-tank failures common in aging OEM radiators.
• Street and Track Ready: Provides the thermal headroom needed for tuned engines and spirited driving.

Protect your investment from overheating and maintain peak performance with a CSF radiator. Whether you are running stock turbos or a big turbo setup, this is the cooling upgrade your B5 S4 deserves. Find premium cooling components at GGCRACING.