The BMW N55 was a turbocharged straight-six petrol engine that began production in 2009, replacing the N54 and first appearing in the F07 5 Series Gran Turismo. It was the first BMW straight-six with a twin-scroll turbocharger and won three straight Wards 10 Best Engines awards from 2011 to 2013. The main differences from the N54 are a single turbocharger instead of two, the addition of Valvetronic variable valve lift, and solenoid fuel injectors in place of piezo ones. A Cylinder-bank Comprehensive Manifold reduces exhaust pressure fluctuation and back-pressure, and the compression ratio is 10.2:1. It powered the F30 and E90 3 Series, the E70 X5 and many other models, the B58 began to phase it out from 2015, and the S55 is its high-performance version for the F80 M3, F82 M4 and F87 M2.
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Fuel or Cycle Configuration Cylinder Count Connections
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Source BMW N55 (Wikipedia)
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The BMW N55 is a turbocharged straight-six petrol (gasoline) engine that began production in 2009.
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The BMW N55 is a turbocharged straight-six petrol (gasoline) engine that began production in 2009.
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The BMW N55 is a turbocharged straight-six petrol (gasoline) engine that began production in 2009.
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The BMW N55 is a turbocharged straight-six petrol (gasoline) engine that began production in 2009.
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The BMW N55 is a turbocharged straight-six petrol (gasoline) engine that began production in 2009.
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The BMW N55 is a turbocharged straight-six petrol (gasoline) engine that began production in 2009.
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The BMW N55 is a turbocharged straight-six petrol (gasoline) engine that began production in 2009.
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The BMW N55 is a turbocharged straight-six petrol (gasoline) engine that began production in 2009.
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The BMW N55 is a turbocharged straight-six petrol (gasoline) engine that began production in 2009.
Part Of: BMW 3 Series (F30), Applications
2011-2015 F30/F34/F31 335i
Part Of: BMW X5 (E70), Applications
2011-2013 E70 X5 xDrive 35i
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