content: <?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/ownership" xmlns:com="http://www.sec.gov/edgar/common">
    <headerData>
      <submissionType>144</submissionType>
      <filerInfo>
        <filer>
          <filerCredentials>
            <cik>0001559086</cik>
            <ccc>XXXXXXXX</ccc>
          </filerCredentials>
        </filer>
        <liveTestFlag>LIVE</liveTestFlag>
  
  
  
      </filerInfo>
    </headerData>
    <formData>
      <issuerInfo>
        <issuerCik>0000908255</issuerCik>
        <issuerName>BORGWARNER INC</issuerName>
        <secFileNumber>001-12162</secFileNumber>
        <issuerAddress>
          <com:street1>3850 HAMLIN RD.</com:street1>
          <com:city>AUBURN HILLS</com:city>
          <com:stateOrCountry>MI</com:stateOrCountry>
          <com:zipCode>48326</com:zipCode>
        </issuerAddress>
        <issuerContactPhone>2487549200</issuerContactPhone>
        <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Demmerle Stefan</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
        <relationshipsToIssuer>
          <relationshipToIssuer>Officer</relationshipToIssuer>
        </relationshipsToIssuer>
      </issuerInfo>
      <securitiesInformation>
        <securitiesClassTitle>Common Stock</securitiesClassTitle>
        <brokerOrMarketmakerDetails>
          <name>Merrill Lynch</name>
          <address>
            <com:street1>225 Liberty St</com:street1>
            <com:street2>Floor 37</com:street2>
            <com:city>New York</com:city>
            <com:stateOrCountry>NY</com:stateOrCountry>
            <com:zipCode>10281</com:zipCode>
          </address>
        </brokerOrMarketmakerDetails>
        <noOfUnitsSold>3000</noOfUnitsSold>
        <aggregateMarketValue>99000.00</aggregateMarketValue>
        <noOfUnitsOutstanding>229780053</noOfUnitsOutstanding>
        <approxSaleDate>03/13/2024</approxSaleDate>
        <securitiesExchangeName>NYSE</securitiesExchangeName>
      </securitiesInformation>
      <securitiesToBeSold>
        <securitiesClassTitle>Common Stock</securitiesClassTitle>
        <acquiredDate>02/10/2017</acquiredDate>
        <natureOfAcquisitionTransaction>Vesting of restricted stock unit award</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>BORGWARNER INC</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>1730</amountOfSecuritiesAcquired>
        <paymentDate>02/10/2017</paymentDate>
        <natureOfPayment>Granted as part of issuer equity compensation plan</natureOfPayment>
      </securitiesToBeSold>
      <securitiesToBeSold>
        <securitiesClassTitle>Common Stock</securitiesClassTitle>
        <acquiredDate>04/28/2017</acquiredDate>
        <natureOfAcquisitionTransaction>Vesting of restricted stock unit award</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>BORGWARNER INC</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>270</amountOfSecuritiesAcquired>
        <paymentDate>04/28/2017</paymentDate>
        <natureOfPayment>Granted as part of issuer equity compensation plan</natureOfPayment>
      </securitiesToBeSold>
      <securitiesToBeSold>
        <securitiesClassTitle>Common Stock</securitiesClassTitle>
        <acquiredDate>02/06/2018</acquiredDate>
        <natureOfAcquisitionTransaction>Vesting of restricted stock unit award</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>BORGWARNER INC</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>1000</amountOfSecuritiesAcquired>
        <paymentDate>02/06/2018</paymentDate>
        <natureOfPayment>Granted as part of issuer equity compensation plan</natureOfPayment>
      </securitiesToBeSold>
      <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
      <securitiesSoldInPast3Months>
        <sellerDetails>
          <name>Demmerle Stefan</name>
          <address>
            <com:street1>3850 HAMLIN RD.</com:street1>
            <com:city>AUBURN HILLS</com:city>
            <com:stateOrCountry>MI</com:stateOrCountry>
            <com:zipCode>48326</com:zipCode>
          </address>
        </sellerDetails>
        <securitiesClassTitle>Common Stock</securitiesClassTitle>
        <saleDate>03/05/2024</saleDate>
        <amountOfSecuritiesSold>3000</amountOfSecuritiesSold>
        <grossProceeds>93877.28</grossProceeds>
      </securitiesSoldInPast3Months>
      <noticeSignature>
        <noticeDate>03/13/2024</noticeDate>
        <signature>Stefan Demmerle</signature>
      </noticeSignature>
    </formData>
  </edgarSubmission>
metadata_documents: [{"type": "144", "sequence": "1", "filename": "primary_doc.xml", "secsgml_size_bytes": 4602}]
text: 144
  0001559086
  XXXXXXXX
  LIVE
  0000908255
  BORGWARNER INC
  001-12162
  3850 HAMLIN RD.
  AUBURN HILLS
  MI
  48326
  2487549200
  Demmerle Stefan
  Officer
  Common Stock
  Merrill Lynch
  225 Liberty St
  Floor 37
  New York
  NY
  10281
  3000
  99000.00
  229780053
  03/13/2024
  NYSE
  Common Stock
  02/10/2017
  Vesting of restricted stock unit award
  BORGWARNER INC
  N
  1730
  02/10/2017
  Granted as part of issuer equity compensation plan
  Common Stock
  04/28/2017
  Vesting of restricted stock unit award
  BORGWARNER INC
  N
  270
  04/28/2017
  Granted as part of issuer equity compensation plan
  Common Stock
  02/06/2018
  Vesting of restricted stock unit award
  BORGWARNER INC
  N
  1000
  02/06/2018
  Granted as part of issuer equity compensation plan
  N
  Demmerle Stefan
  3850 HAMLIN RD.
  AUBURN HILLS
  MI
  48326
  Common Stock
  03/05/2024
  3000
  93877.28
  03/13/2024
  Stefan Demmerle