The BorgWarner K04-023 upgrade turbocharger is designed for Audi S3 8L and Audi TT 8N engines with a 1.8T engine. This turbocharger is a direct, 1:1 replacement for the original unit and features a larger CNC-machined compressor wheel and reinforced internal components. Thanks to improved airflow and durability, power outputs of up to approximately 330 hp can be achieved with the right upgrades.
Advantages
• Direct plug & play replacement for OEM turbo
• Larger CNC-machined compressor wheel for more airflow
• Reinforced axial bearing for higher loads
• Reinforced pressure membrane
• Fully balanced turbo
• Oil and water cooled system
• Suitable for powerful tuning builds
Technical specifications
• Turbo type: K04-023 upgrade turbo
• Compressor wheel: 63 / 46.5 mm
• Cooling: oil and water
• Wastegate: internal
• Balancing: fully dynamically balanced
• Fitment: Direct OEM replacement
Compatibility
• Audi S3 8L 1.8T 209PK
• Audi TT 8N 1.8T 225PK
• Seat Leon 1M Cupra R 1.8T 210–225HP
Also suitable for small turbo conversions up to 1.8L engines, such as:
• VW G40 projects
• Fiat Punto Turbo
• Fiat Uno Turbo
Recommended upgrades for maximum performance
• ECU tuning (chip)
• 70 mm exhaust system
• 200-cell sports catalyst
• 76 mm downpipe
• Large intercooler
Contents
• BorgWarner K04-023 turbocharger
Frequently Asked Questions
Is this turbo a direct replacement for the original turbo?
Yes, the turbo is designed as a 1:1 plug-and-play replacement.
What is the maximum power with this turbo?
Up to about 330 hp with the right modifications and tuning.
Do any parts need to be replaced during installation?
It is recommended to replace the oil supply and return lines during installation.
