NEEDED URGENTLY, Q4 Turbo Serial Number - Alfa Romeo Forum
You are currently unregistered, register for more features.    
Thread Tools Search this Thread
Status: - Update
Posts: n/a
NEEDED URGENTLY, Q4 Turbo Serial Number

I have found a source at the Garett Factory here in Italy but the rebuild shop still has my turbo. They said it is ruined because the shell has been grounded up. So, I desperately need the serial number of the turbo that is printed between the two halves. The alfa part number is not enough for the folks at Garett to crossmatch. Can anyone with a Q4 please run out to their car and write this number down for me! Also, if I use the Delta Integrale Evo unit can I attain a performance increase or is the mounting on the manifold so different that it is not possible.

Sponsored Links
Juan alzaga
Status: - Update
Posts: n/a
If I were you, I will go for a T3/T4 hybrid turbo as Steve Webb have done. This is better that the std Garret T3...and if your budget is big...go for a ceramic roller bearing turbo...

Juan 155 Q4
Status: -
AO Member
Join Date: Jun 2001
Location: Solna/Stockholm/Sweden
Posts: 177

If it's not too late I here give you the turbo id-number that I read a while a go as I planned some upgrades.



465103-4 YL0137F TB0367


DHS6H (on one side)

42A95 M4 (on the other side)

The 42A95 might be 42A85, it was hard to see.

About the Delta Integrale Evolution. It has a Garrett TB0338 capable of 400 hp. It is possible to get it from a compressor upgrade, but you better also upgrade the turbine from 48 mm outlet to 60 mm. If you do that I guess it doesn't fit just like that. But even better, in my opinion is to go for the new ball bearing GT 28. It is "only" capable of 350 hp but on the other hand can it load 2.2 bar, lasts forever and have a much much better response on low rpms. The TB0338 has of course slower response than the original one (TB0367) as the compressor has much larger inertia.

Good luck

A. Möller

A_Möller is offline  

Go Back   Alfa Romeo Forum > Supported Alfa Romeo Models > Technical & Vehicle Assistance > Alfa 155

needed , number , serial , turbo , urgently

Thread Tools Search this Thread
Show Printable Version Show Printable Version
Email this Page Email this Page
Search this Thread:

Advanced Search

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

For the best viewing experience please update your browser to Google Chrome