Turbosystems Stage 4 HTD3279BB Universal Vacuum Actuated Turbocharger for BMW N57

This is our custom vacuum-controlled ball bearing solution for other N57 engines, designed to work with a 180kW/245hp exhaust manifold.

Stage 1 (HTD2268BB):

Dual ceramic ball bearing;

CNC machined compressor housing;

CNC machined turbine housing;
OEM variable geometry nozzle;
Reinforced and machined from solid compressor wheel - 46/68 mm;

Turbine wheel - 50.5/45 mm;

Flow bench adjusted;

VSR balanced;

Power range: up to 300 HP

Stage 2 (HTD2872BB):

Dual ceramic ball bearing;

CNC machined compressor housing;

CNC machined turbine housing;
OEM variable geometry nozzle;
Reinforced and machined from solid compressor wheel - 50/72 mm;

Turbine wheel - 51/49 mm;

Flow bench adjusted;

VSR balanced;

Power: up to 400 HP

Stage 3 (HTD3073BB):

Dual ceramic ball bearing;

CNC machined compressor housing;

CNC machined turbine housing;
Custom variable geometry nozzle;
Reinforced, machined from solid compressor wheel - 54/73 mm;

Turbine wheel - 58/54 mm;
Flow bench adjusted;
VSR balanced;

Power: over 420 HP

Stage 4 (HTD3279BB):

Large dual ceramic ball bearing;
Enlarged shaft and turbine wheel (6 mm diameter);
CNC machined compressor housing;
CNC machined turbine housing;
Custom variable geometry nozzle;
Reinforced, machined from solid compressor wheel - 56/79 mm;
High flow turbine wheel - 58/56 mm;
Flow bench adjusted;
VSR balanced;

Power: over 470 HP

Stage 5 (HTD3379BB):

Oversized dual ceramic ball bearing;
Larger diameter shaft and wheel (7 mm);
CNC machined compressor housing;
CNC machined turbine housing;
Newly designed variable geometry nozzle with 14 blades;
Reinforced and machined from solid compressor wheel (56/79 mm);
High flow turbine wheel (62.8/56 mm);
Flow bench adjusted;
VSR balanced;

Power: over 500 HP