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The BorgWarner S400SX turbocharger noted at 74.5mm with 100/83 sizing is an S400-series turbo option targeting higher airflow applications. The listed sizing communicates compressor and wheel dimensions associated with S400SX kits, letting builders select a turbo that aligns with required boost and flow characteristics. Fit it where increased compressor capacity is needed for modified engines.
BorgWarner Turbo S400SX SX 74.5mm (100/83)
