- 454135-0001 changed to 454135-0002 then to 454135-0006. Use 454135-0006 as a Direct Service Replacement. These are all Step I VNT’s with 12 vanes and cannot be interchanged with Step II VNT’s.
- 454135-0003 changed to 454135-0005 then to 454135-0008 then to 454135-0010. Use 454135-0010 as a Direct Service Replacement. These are all Step II VNT’s with 13 vanes and cannot be interchanged with Step I VNT’s.Note:
GT15V and GT17V VNT’s have 9 vanes in Step I and 11 vanes in Step II.
GT20V VNT’s have 12 vanes in step I and 13 vanes in Step II.TREVOR CASS
Product Support Engineer
Allied Signal Turbocharger Aftermarket
