APR is now proud to release our K04 upgrade kit for the B6 Audi A4 1.8T. Our kit includes the K04 turbo, the compressor inlet O-ring, three turbo outlet studs, one manifold to turbo gasket, four Bosch fuel injectors, and one turbo to cat gasket. This kit is a straight forward turbo swap that makes a big difference in the power output of the car. This kit makes solid gains in both horsepower and torque. With no other mods than an exhaust, the kit made 247hp/286lb-ft on 93 octane gas. The exhaust is not required. This kit includes software. Injectors sold separately. Injector factory part number: 06A906031J Injector bosch part number: 02801558921 Fits Audi A4 02-06, A4 Quattro 02-05