The APR K04-15 Turbo System for the B6 Audi A4 1.8T is a comprehensive upgrade kit designed to significantly enhance engine performance. It includes a K04 turbocharger, compressor inlet O-ring, turbo outlet studs, manifold to turbo gasket, four Bosch fuel injectors, and a turbo to catalytic converter gasket. This direct bolt-on upgrade offers a straightforward installation process and delivers substantial gains in horsepower and torque. When paired with an exhaust system, the kit has demonstrated outputs of 247 horsepower and 286 lb-ft of torque on 93 octane fuel, making it an ideal choice for enthusiasts seeking increased power without extensive modifications.

Designed specifically for 2002-2006 Audi A4 models with the 1.8T engine in a longitudinal configuration, this kit is suitable for B6 chassis vehicles. It is intended for street and performance use, providing a reliable and efficient upgrade for those looking to boost their vehicle’s power output. The kit is a direct replacement for the stock turbo system and includes all necessary components for a complete upgrade. Compatibility notes indicate that injectors are sold separately, and the software is included to optimize performance. This upgrade is perfect for daily drivers and track enthusiasts aiming for significant performance improvements.