Picture represents all Air Shut off sizes
7" Cast aluminum air shut off
Opening is
Air shut off attaches directly to Turbo housing, no air cleaner is used.
Spring are included
Air Shut Off is triggered by a cable that is not included
Air Shut off doesn't say "Preble Diesel Performance" this is a water mark for picture purposes only
| Airshutoff Size | Opening (ID) | Overall Thickness | Overall Width | Height Closed | Height Open | Flange Width per side |
| 3" | 2.5" | 1.875" | 4" | 5.5" | 7" | 3/4" |
| 4" | 3.5" | 1.875" | 5" | 6.75" | 9" | 3/4" |
| 5" | 4.5" | 1.875" | 6" | 9" | 11.25" | 3/4" |
| 6" | 5.5" | 2" | 7" | 10" | 14.5" | 3/4" |
| 7" | 6.5" | 2.5" | 8" | 11" | 15.75" | 1" |