APR K04-15 Turbo System
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APR K04-15 Turbo System - Audi A4/A4 Quattro (B6) - 1.8T Longitudinal
APR has built a reputation for extracting real, reliable power from Audi and Volkswagen turbo platforms, and this K04 upgrade kit continues that tradition. Designed as a straightforward turbo swap for the Audi A4 and Audi A4 Quattro, it replaces the factory K03 with a larger K04 unit to unlock meaningful gains in horsepower and torque without requiring extensive supporting mods.
This listing covers the Audi A4 and Audi A4 Quattro (B6) fitted with the 1.8T engine in longitudinal configuration. SKU T2100004 includes the APR K04 turbocharger along with the hardware needed to complete the swap.
Note: Fuel injectors are required for this kit but are sold separately. APR's own testing showed 184 kW / 388 Nm (247 hp / 286 lb-ft) on 93 octane with no other modifications besides an exhaust, though an exhaust upgrade is not required to run this kit.
Kit Contents
- APR K04 turbocharger
- Compressor inlet O-ring
- Three turbo outlet studs
- Manifold to turbo gasket
- Turbo to catalytic converter gasket
- Four Bosch fuel injectors
- APR software
Vehicle compatibility, OEM part numbers, and fitment notes are provided in the tabs above. Please confirm your engine code and drivetrain configuration before ordering.
Not sure if this kit suits your build? Contact our team at sales@chicaneaustralia.com.au for expert advice.
Vehicle Compatibility
| Make | Model | Chassis | Engine |
|---|---|---|---|
| Audi | A4/A4 Quattro | B6 | - |
Technical Specifications
| Spec | Value |
|---|---|
| Turbocharger | K04 |
| Included Components | K04 turbo, compressor inlet O-ring, three turbo outlet studs, one manifold to turbo gasket, four Bosch fuel injectors, one turbo to cat gasket |
| Software | Included |
| Peak Power (with exhaust, 93 octane) | 247 hp (184 kW) |
| Peak Torque (with exhaust, 93 octane) | 388 Nm (286 lb-ft) |
No instructions available for this product.

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