Blown turbo. Is it possible to replace a k03 turbo with k04 turbo

[A4slineavant]

Hi everyone, I am new to the site and this is my first post. Sorry if I am covering old ground but I couldn't find the answer on here.

So my problem is my turbo blew last week. I am about to order a new one but have heard that the k04 turbo is a direct fit for the k03.

My car is a 2004 B6 A4 1.8t sline avant 190. I believe it has already been remapped.

The question is can I replace my blown k03 with a new k04 and is it a straight forward swap and all will run ok? Or is it best to just stick with the standard k03 turbo.

[sam.bird3]

just done a little search. It has the KO3s Turbo

[escobar.0797]

Hi there,just stick with the KO3S.It actually depends how many brakes you are looking for and how much are you ready to spend.You won't see much difference from KO4-001 replacement.And as far as I know KO3S is stronger.Stick with it and get it remapped.You are looking at 220-230bhp with nice panel filter or cold induction kit.Many people have done it,including my mate who has VRS Octavia.Also keep the wallet happy:).Hope that helps!

[A4slineavant]

Thanks for the help guys. Will stick with the K03S. Can't wait to get the car fixed and back. Miss having my wheels.