BMW 540I Parts and Technical Articles

If one was to compare an automobile and all of its systems to the human body, the exhaust system would be analogous to the intestines. Its job is to get rid of waste products, and there are several BMW 540I parts that comprise your vehicle’s exhaust system.

When the gas-fuel mixture is burned in the cylinder, it produces the power stroke, which pushes the piston downwards. The trip back up is called the exhaust stroke. A valve opens in the cylinder head, and the waste gases are pushed out into the exhaust manifold. This is the first of the BMW 540I parts through which exhaust gases are processed. The exhaust gases travel past an oxygen sensor, which measures the amount of oxygen in the exhaust, and signals the fuel injectors to adjust the fuel mixture accordingly. The importance of the oxygen sensor is something you shouldn’t discount. BMW 540I parts such as this allow your vehicle to run much more economically, using only as much fuel as it requires. Some signs of a defective oxygen sensor include increased fuel consumption and unusually foul smelling exhaust. Once past the oxygen sensor, these gases pass into the catalytic converter, where toxic elements such as hydrocarbons and are removed. The last of these BMW parts through which the exhaust passes before exiting out the tailpipe is the muffler. Today’s muffler is far more durable than those of thirty and forty years ago, and less subject to rust-out. It also does a better job in keeping your BMW running quietly.

Most Popular BMW 540I Parts

  • 82141467704 Genuine BMW Antifreeze/Coolant; BMW Antifreeze; 1 Gallon
    In Stock
    Ships within 1 Business Day
    Latest ethylene glycol based formulation recommended for all specified BMW models.
    MY94-03 - 540i
    MY97-98 - 540i Sport
    MY01-03 - 540i Sport Wagon
    $26.19
    Reg
    $27.28
    List
    $27.28
  • 51148132375OE Genuine BMW Emblem; BMW Roundel; 82mm Diameter
    In Stock
    Ships within 1 Business Day
    MY97-03 - 540i
    Also need (2) 51141807495 grommets per emblem. 1 per car.
    MY94-95 - 540i
    Also need (2) 51141889489 grommets per emblem. 2 per car.
    MY97-98 - 540i Sport
    Also need (2) 51141807495 grommets per emblem. 1 per car.
    MY01-03 - 540i Sport Wagon
    Also need (2) 51141807495 grommets per emblem. 1 per car.
    $42.55
    Reg
    $44.32
    List
    $44.32
  • 51171928197 URO Parts Fuel Door Hinge
    In Stock
    Ships within 1 Business Day
    1 per car.
    MY94-95 - 540i
    $9.58
    Reg
    $9.98
    List
    $36.68
  • In Stock
    Ships within 1 Business Day
    Please verify appearance and size of existing caps prior to ordering, can vary depending on wheel...
    MY97-03 - 540i
    MY94-95 - 540i
    For models with 10 spoke wheels.
    MY98-98 - 540i Sport
    MY01-03 - 540i Sport Wagon
    $16.32
    Reg
    $17.00
    List
    $17.00
  • 16116756772 Blau Fuel/Gas Cap; With Attachment Cord
    In Stock
    Ships within 1 Business Day
    1 per car.
    MY00-19 - 540i
    MY99-99 - 540i
    For iT wagon models only.
    MY01-03 - 540i Sport Wagon
    MY17-19 - 540i xDrive
    $18.36
    Reg
    $19.13
    List
    $32.65
  • 36136767550 Genuine BMW Wheel Center Cap/Emblem; Emblem for Wheel Center; 64.5mm Diameter(2-1/2 inch) ; Adhesive Back
    In Stock
    Ships within 1 Business Day
    Please verify size of existing emblems prior to ordering. 4 per car.
    MY97-03 - 540i
    MY97-98 - 540i Sport
    MY01-03 - 540i Sport Wagon
    $7.39
    Reg
    $7.70
    List
    $7.70
  • 51148132375KIT AAZ Preferred Emblem; With Mounting Grommets, KIT
    In Stock
    Ships within 1 Business Day
    This kit contains the Genuine 51148132375 roundel along with two Genuine mounting grommets.
    MY97-03 - 540i
    MY97-98 - 540i Sport
    MY01-03 - 540i Sport Wagon
    $43.73
    Reg
    $45.55
    List
    $40.43
  • BM-36131181081 Genuine BMW Emblem; Wheel Center Cap; 58mm Diameter
    In Stock
    Ships within 1 Business Day
    Verify existing center cap diameter prior to ordering, variations may exist.
    MY94-98 - 540i
    MY99-03 - 540i
    Sedan models only.
    $8.18
    Reg
    $8.52
    List
    $8.52
  • In Stock
    Ships within 1 Business Day
    MY97-19 - 540i
    MY01-03 - 540i Sport Wagon
    MY17-19 - 540i xDrive
    $0.33
    Reg
    $0.34
    List
    $0.50
  • 83212365946 Genuine BMW Engine Oil; 5W-30 Full Synthetic; TwinPower Turbo
    In Stock
    Ships within 1 Business Day
    Latest version BMW Twin Power Turbo motor oil. Recommended for all BMW engines except M-Type (S54,...
    MY97-19 - 540i
    Recommended for all BMW engines, except M engines S54, S62, S65 and S85 or Advanced Diesel engines M57, N47 and N57. Meets Specifications: ACEA A3/B4, API SL, BMW Longlife 01.
    MY01-03 - 540i Sport Wagon
    Recommended for all BMW engines, except M engines S54, S62, S65 and S85 or Advanced Diesel engines M57, N47 and N57. Meets Specifications: ACEA A3/B4, API SL, BMW Longlife 01.
    MY17-19 - 540i xDrive
    Recommended for all BMW engines, except M engines S54, S62, S65 and S85 or Advanced Diesel engines M57, N47 and N57. Meets Specifications: ACEA A3/B4, API SL, BMW Longlife 01.
    $9.96
    Reg
    $10.38
    List
    $10.38
  • 64116923204 Behr Hella Service Blower Motor Resistor/Regulator; AC Final Stage Unit; 39 Heatsink Pins
    In Stock
    Ships within 1 Business Day
    For models with automatic climate control. Due to numerous BMW factory supercessions and updates...
    MY97-03 - 540i
    MY97-03 - 540i
    Final Stage Unit; Manufacturer Body Code: E39
    MY97-98 - 540i Sport
    MY01-03 - 540i Sport Wagon
    MY01-03 - 540i Sport Wagon
    Final Stage Unit; Manufacturer Body Code: E39
    $29.32
    Reg
    $30.54
    List
    $154.92
  • 64116917001 Genuine BMW Cabin Air Temperature Sensor; AUC Recirculated Air Control Sensor
    In Stock
    Ships within 1 Business Day
    MY94-03 - 540i
    MY97-98 - 540i Sport
    MY01-03 - 540i Sport Wagon
    $83.59
    Reg
    $87.07
    List
    $87.07
  • LT4160 LTI Tools Wheel Lock Key
    In Stock
    Ships within 1 Business Day
    MY94-19 - 540i
    For use with BMW and MINI internal spline drive wheel locks. Includes 20 wheel lock keys, a nylon sleeved 1/2" drive 17 mm socket, and a custom blow molded carrying case.
    MY01-03 - 540i Sport Wagon
    For use with BMW and MINI internal spline drive wheel locks. Includes 20 wheel lock keys, a nylon sleeved 1/2" drive 17 mm socket, and a custom blow molded carrying case.
    MY17-19 - 540i xDrive
    For use with BMW and MINI internal spline drive wheel locks. Includes 20 wheel lock keys, a nylon sleeved 1/2" drive 17 mm socket, and a custom blow molded carrying case.
    $163.76
    Reg
    $170.58
    List
    $169.95
  • In Stock
    Ships within 1 Business Day
    Please verify diameter of existing tubing prior to ordering. Sold by the meter.
    MY94-95 - 540i
    $6.07
    Reg
    $6.32
    List
    $17.82
  • 17211437772 Behr Auto Trans Oil Cooler Thermostat; Connector Pipe for A/T Oil Cooler
    In Stock
    Ships within 1 Business Day
    BMW also refers to this piece as voltage regulator. 1 per car.
    MY00-03 - 540i
    MY99-99 - 540i
    For models with production date from 9/1998.
    MY01-03 - 540i Sport Wagon
    $84.75
    Reg
    $88.28
    List
    $174.60
  • 13621433077 Facet Engine Cooling Fan Sensor; In Lower Radiator Hose
    In Stock
    Ships within 1 Business Day
    For replacement o-ring alone see 091158010. 1 per car.
    MY99-03 - 540i
    MY99-03 - 540i
    Coolant temperature sensor for auxillary/electric fan control.
    MY97-03 - 540i
    Located At Lower Radiator Hose; Manufacturer Body Code: E39
    MY00-03 - 540i
    Located in radiator hose. For replacement o-ring, see part # 09 1158 010.
    MY99-99 - 540i
    Located in radiator hose. For replacement o-ring, see part # 09 1158 010. Body Type: Wagon
    Located in radiator hose. For replacement o-ring, see part # 09 1158 010. from 09/98; Body Type: Sedan
    MY98-98 - 540i
    Located in radiator hose. For replacement o-ring, see part # 09 1158 010. from 09/98
    MY01-03 - 540i Sport Wagon
    MY01-03 - 540i Sport Wagon
    Coolant temperature sensor for auxillary/electric fan control.
    MY01-03 - 540i Sport Wagon
    Located At Lower Radiator Hose; Manufacturer Body Code: E39
    MY01-03 - 540i Sport Wagon
    Located in radiator hose. For replacement o-ring, see part # 09 1158 010.
    $10.67
    Reg
    $11.11
    List
    $55.53
  • 13621433077OE Genuine BMW Engine Cooling Fan Sensor; In Lower Radiator Hose
    Available To Order
    Usually Ships within 1-2 Business Days
    For replacement o-ring alone see 091158010. 1 per car.
    MY99-03 - 540i
    MY99-03 - 540i
    Coolant temperature sensor for auxillary/electric fan control.
    MY00-03 - 540i
    Located in radiator hose. For replacement o-ring, see part # 09 1158 010.
    MY99-99 - 540i
    Located in radiator hose. For replacement o-ring, see part # 09 1158 010. Body Type: Wagon
    Located in radiator hose. For replacement o-ring, see part # 09 1158 010. from 09/98; Body Type: Sedan
    MY98-98 - 540i
    Located in radiator hose. For replacement o-ring, see part # 09 1158 010. from 09/98
    MY01-03 - 540i Sport Wagon
    MY01-03 - 540i Sport Wagon
    Coolant temperature sensor for auxillary/electric fan control.
    MY01-03 - 540i Sport Wagon
    Located in radiator hose. For replacement o-ring, see part # 09 1158 010.
    $53.30
    Reg
    $55.52
    List
    $55.52
  • In Stock
    Ships within 1 Business Day
    MY02-03 - 540i
    Audio input cable kit that plugs into the original radio. Allows use of any music player with an audio output. Only for cars with CD Player S650A and BMW Business Radio S661A. from 09/02
    MY02-03 - 540i Sport Wagon
    Audio input cable kit that plugs into the original radio. Allows use of any music player with an audio output. Only for cars with CD Player S650A and BMW Business Radio S661A. from 09/02
    $69.12
    Reg
    $72.00
    List
    $72.00
  • 36131181081KIT AAZ Preferred Emblem; Wheel Center Cap; 58mm Diameter; SET of 4
    In Stock
    Ships within 1 Business Day
    Verify existing center cap diameter prior to ordering, variations may exist. This kit contains all...
    MY94-98 - 540i
    MY99-03 - 540i
    Sedan models only.
    $32.72
    Reg
    $34.08
    List
    $32.08
  • 0005000894 Behr Hella Service Radiator Fitting; 90 Degree Elbow Fitting on Top of Radiator for Drain Hose
    In Stock
    Ships within 1 Business Day
    1 per car.
    MY97-03 - 540i
    MY97-98 - 540i Sport
    MY01-03 - 540i Sport Wagon
    $2.49
    Reg
    $2.59
    List
    $9.50

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