HE451VE Bolt Spacing: 2.75" x 3.50" (70mm x 89mm). HE451VE Port Shape: Single Undivided Port. HE551VE HE561VE ISX15 15.1L Manifold Inlet Adapter to T6 Divided Turbo K31 CM871. HT3B Divided Turbo to T4 CS Manifold Adapter fits Cummins Holset N14 HT60 BHT3E.
