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
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Ships within 1 Business DayLatest ethylene glycol based formulation recommended for all specified BMW models.MY94-03 - 540iMY97-98 - 540i SportMY01-03 - 540i Sport Wagon$26.19Reg$27.28List$27.28 -
Ships within 1 Business DayMY97-03 - 540iAlso need (2) 51141807495 grommets per emblem. 1 per car.MY94-95 - 540iAlso need (2) 51141889489 grommets per emblem. 2 per car.MY97-98 - 540i SportAlso need (2) 51141807495 grommets per emblem. 1 per car.MY01-03 - 540i Sport WagonAlso need (2) 51141807495 grommets per emblem. 1 per car.$42.55Reg$44.32List$44.32 -
$9.58Reg$9.98List$36.68 -
Ships within 1 Business DayPlease verify appearance and size of existing caps prior to ordering, can vary depending on wheel...MY97-03 - 540iMY94-95 - 540iFor models with 10 spoke wheels.MY98-98 - 540i SportMY01-03 - 540i Sport Wagon$16.32Reg$17.00List$17.00 -
Ships within 1 Business Day1 per car.MY00-19 - 540iMY99-99 - 540iFor iT wagon models only.MY01-03 - 540i Sport WagonMY17-19 - 540i xDrive$18.36Reg$19.13List$32.65 -
Ships within 1 Business DayPlease verify size of existing emblems prior to ordering. 4 per car.MY97-03 - 540iMY97-98 - 540i SportMY01-03 - 540i Sport Wagon$7.39Reg$7.70List$7.70 -
Ships within 1 Business DayThis kit contains the Genuine 51148132375 roundel along with two Genuine mounting grommets.MY97-03 - 540iMY97-98 - 540i SportMY01-03 - 540i Sport Wagon$43.73Reg$45.55List$40.43 -
Ships within 1 Business DayVerify existing center cap diameter prior to ordering, variations may exist.MY94-98 - 540iMY99-03 - 540iSedan models only.$8.18Reg$8.52List$8.52 -
Ships within 1 Business DayMY97-19 - 540iMY01-03 - 540i Sport WagonMY17-19 - 540i xDrive$0.33Reg$0.34List$0.50 -
Ships within 1 Business DayLatest version BMW Twin Power Turbo motor oil. Recommended for all BMW engines except M-Type (S54,...MY97-19 - 540iRecommended 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 WagonRecommended 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 xDriveRecommended 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.$9.96Reg$10.38List$10.38 -
Ships within 1 Business DayFor models with automatic climate control. Due to numerous BMW factory supercessions and updates...MY97-03 - 540iMY97-03 - 540iFinal Stage Unit; Manufacturer Body Code: E39MY97-98 - 540i SportMY01-03 - 540i Sport WagonMY01-03 - 540i Sport WagonFinal Stage Unit; Manufacturer Body Code: E39$29.32Reg$30.54List$154.92 -
Ships within 1 Business DayMY94-03 - 540iMY97-98 - 540i SportMY01-03 - 540i Sport Wagon$83.59Reg$87.07List$87.07 -
Ships within 1 Business DayMY94-19 - 540iFor 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 WagonFor 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 xDriveFor 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.$163.76Reg$170.58List$169.95 -
Ships within 1 Business DayPlease verify diameter of existing tubing prior to ordering. Sold by the meter.MY94-95 - 540i$6.07Reg$6.32List$17.82 -
Ships within 1 Business DayBMW also refers to this piece as voltage regulator. 1 per car.MY00-03 - 540iMY99-99 - 540iFor models with production date from 9/1998.MY01-03 - 540i Sport Wagon$84.75Reg$88.28List$174.60 -
Ships within 1 Business DayFor replacement o-ring alone see 091158010. 1 per car.MY99-03 - 540iMY99-03 - 540iCoolant temperature sensor for auxillary/electric fan control.MY97-03 - 540iLocated At Lower Radiator Hose; Manufacturer Body Code: E39MY00-03 - 540iLocated in radiator hose. For replacement o-ring, see part # 09 1158 010.MY99-99 - 540iLocated 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: SedanMY98-98 - 540iLocated in radiator hose. For replacement o-ring, see part # 09 1158 010. from 09/98MY01-03 - 540i Sport WagonMY01-03 - 540i Sport WagonCoolant temperature sensor for auxillary/electric fan control.MY01-03 - 540i Sport WagonLocated At Lower Radiator Hose; Manufacturer Body Code: E39MY01-03 - 540i Sport WagonLocated in radiator hose. For replacement o-ring, see part # 09 1158 010.$10.67Reg$11.11List$55.53 -
Usually Ships within 1-2 Business DaysFor replacement o-ring alone see 091158010. 1 per car.MY99-03 - 540iMY99-03 - 540iCoolant temperature sensor for auxillary/electric fan control.MY00-03 - 540iLocated in radiator hose. For replacement o-ring, see part # 09 1158 010.MY99-99 - 540iLocated 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: SedanMY98-98 - 540iLocated in radiator hose. For replacement o-ring, see part # 09 1158 010. from 09/98MY01-03 - 540i Sport WagonMY01-03 - 540i Sport WagonCoolant temperature sensor for auxillary/electric fan control.MY01-03 - 540i Sport WagonLocated in radiator hose. For replacement o-ring, see part # 09 1158 010.$53.30Reg$55.52List$55.52 -
Ships within 1 Business DayMY02-03 - 540iAudio 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 09/02MY02-03 - 540i Sport WagonAudio 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$69.12Reg$72.00List$72.00 -
Ships within 1 Business DayVerify existing center cap diameter prior to ordering, variations may exist. This kit contains all...MY94-98 - 540iMY99-03 - 540iSedan models only.$32.72Reg$34.08List$32.08 -
Ships within 1 Business Day1 per car.MY97-03 - 540iMY97-98 - 540i SportMY01-03 - 540i Sport Wagon$2.49Reg$2.59List$9.50
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