Holset HE400 / HE500 Series
In production since 2005 for engines from 150 kW up to 420 kW and beyond, with pressure ratios up to 4.5:1, HE400/HE500 is the current high-pressure flagship replacing the legacy HX50/HX60 frames, engineered specifically for high-pressure transient airflow to meet modern Tier II/III marine emissions regimes.
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