$1,960.00
The Untd. Performance Air Cooler / Intercooler Kit for the Audi B9 RS4/RS5 2.9T EA839 is engineered for maximum cooling efficiency and reliability under high boost conditions. Featuring a high-capacity core and optimized flow design, it reduces intake air temperatures to maintain consistent power delivery. Built with premium materials for durability, this kit supports both stock and tuned applications. Perfect for enthusiasts seeking improved performance and heat management.
Available on backorder
Take control of intake temps and unlock consistent, repeatable power with the Untd. Performance Air to Water Intercooler Kit, precisely engineered for the Audi B9 RS4 and RS5 with the 2.9T EA839 twin-turbo V6. Whether you’re pushing a tuned setup or just want to eliminate heat soak, this upgraded air-to-water cooler delivers exceptional thermal efficiency and long-lasting reliability.
Key Features:
Massive Cooling Upgrade
Designed to outperform the factory unit, the Untd. intercooler features a significantly larger core and improved flow characteristics. By increasing the core volume by +185%, this system reduces intake temperatures dramatically, ensuring consistent power delivery during spirited driving or track sessions.
Direct Bolt-On Fitment
Designed for plug-and-play installation on the Audi B9 RS4/RS5, this intercooler fits perfectly with OEM mounting points and plumbing. No cutting or permanent modifications required.
High-Efficiency Core Design
The upgraded intercooler core measures 222 mm x 200 mm x 120 mm, offering a 5.33-liter volume—compared to the stock core at just 1.87 liters (220 mm x 100 mm x 85 mm). That’s a +185% increase in core volume, resulting in lower IATs, reduced heat soak, and more reliable power under load.
Built for Performance and Durability
Manufactured from high-grade aluminum and precision TIG-welded for strength, this intercooler is engineered to handle increased boost levels and high thermal demands. It’s equally at home on the street or track.
OEM+ Appearance
Despite its upgraded performance, the kit retains a clean, factory-style aesthetic that integrates seamlessly behind the front grille—stealthy, sleek, and effective.
Core Dimensions (Stock): 220 mm x 100 mm x 85 mm → Volume: 1.87 L
Core Dimensions (Untd.): 222 mm x 200 mm x 120 mm → Volume: 5.33 L (+185%)
Weight: 24.24 lbs
Dimensional Weight: 49.37 cm³/lbs
Overall Dimensions: L 22.00″ × W 22.00″ × H 15.00″
1 × Intercooler
2 × Silicone Air Hoses
6 × Silicone Water Hoses
1 × Mounting Hardware Kit
Audi RS4 B9 2.9T (2018+)
Audi RS5 B9 2.9T (2018+)
Engine: 2.9L V6 Twin-Turbo
Compatible with both sedan (RS4) and coupe (RS5) variants
Whether you’re running a stock engine, a Stage 2 tune, or a more aggressive turbo setup, the Untd. Performance Catted Downpipe w/Shield is the perfect upgrade to support increased airflow and turbo efficiency, providing substantial power and sound improvements.
Get the cooling performance your Audi 2.9T truly deserves with the Untd. Performance Intercooler Kit—engineered for serious enthusiasts who demand reliable power, every time.
