HE400VG VGT Complete Turbocharger 5459710 — Overview The HE400VG is a variable geometry turbocharger released under engine maker number 5459710 for the Cummins fifteen litre block, covering X15, ISX15 and QSX15 applications built from 2016 onward. Unlike a wastegate unit, this charger regulates boost through a commanded vane ring, allowing one hardware family to serve the 400 to 500 horsepower band across multiple calibrations. Key Features Vane ring variable geometry charger