    <SEC-DOCUMENT>0001552000-18-000010-index.html : 20180108
    <SEC-HEADER>0001552000-18-000010.hdr.sgml : 20180108
    <ACCEPTANCE-DATETIME>20180108161851
    ACCESSION NUMBER:		0001552000-18-000010
    CONFORMED SUBMISSION TYPE:	8-K
    PUBLIC DOCUMENT COUNT:		47
    CONFORMED PERIOD OF REPORT:	20180102
    ITEM INFORMATION:		Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year
    ITEM INFORMATION:		Regulation FD Disclosure
    ITEM INFORMATION:		Financial Statements and Exhibits
    FILED AS OF DATE:		20180108
    DATE AS OF CHANGE:		20180108

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			MPLX LP
    		CENTRAL INDEX KEY:			0001552000
    		STANDARD INDUSTRIAL CLASSIFICATION:	PIPE LINES (NO NATURAL GAS) [4610]
    		IRS NUMBER:				270005456
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		8-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-35714
    		FILM NUMBER:		18516637

    	BUSINESS ADDRESS:
    		STREET 1:		200 E. HARDIN STREET
    		CITY:			FINDLAY
    		STATE:			OH
    		ZIP:			45840
    		BUSINESS PHONE:		(419) 421-2159

    	MAIL ADDRESS:
    		STREET 1:		200 E. HARDIN STREET
    		CITY:			FINDLAY
    		STATE:			OH
    		ZIP:			45840
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>8-K
    <SEQUENCE>1
    <FILENAME>mplx8-kjan8.htm
    <DESCRIPTION>8-K
    <TEXT>
    Document 1 - file: mplx8-kjan8.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>EX-3.1
    <SEQUENCE>2
    <FILENAME>ex31secondamended.htm
    <DESCRIPTION>EXHIBIT 3.1
    <TEXT>
    Document 2 - file: ex31secondamended.htm

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    <DOCUMENT>
    <TYPE>EX-99.1
    <SEQUENCE>3
    <FILENAME>mplxubs.htm
    <DESCRIPTION>EXHIBIT 99.1
    <TEXT>
    Document 3 - file: mplxubs.htm

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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>4
    <FILENAME>mplxubs001.jpg
    <TEXT>
    Document 4 - file: mplxubs001.jpg

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    <SEQUENCE>5
    <FILENAME>mplxubs002.jpg
    <TEXT>
    Document 5 - file: mplxubs002.jpg

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    <SEQUENCE>6
    <FILENAME>mplxubs003.jpg
    <TEXT>
    Document 6 - file: mplxubs003.jpg

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    <SEQUENCE>7
    <FILENAME>mplxubs004.jpg
    <TEXT>
    Document 7 - file: mplxubs004.jpg

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    <SEQUENCE>8
    <FILENAME>mplxubs005.jpg
    <TEXT>
    Document 8 - file: mplxubs005.jpg

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    <SEQUENCE>9
    <FILENAME>mplxubs006.jpg
    <TEXT>
    Document 9 - file: mplxubs006.jpg

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    <SEQUENCE>10
    <FILENAME>mplxubs007.jpg
    <TEXT>
    Document 10 - file: mplxubs007.jpg

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    <SEQUENCE>11
    <FILENAME>mplxubs008.jpg
    <TEXT>
    Document 11 - file: mplxubs008.jpg

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    <SEQUENCE>12
    <FILENAME>mplxubs009.jpg
    <TEXT>
    Document 12 - file: mplxubs009.jpg

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    <DOCUMENT>
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    <SEQUENCE>13
    <FILENAME>mplxubs010.jpg
    <TEXT>
    Document 13 - file: mplxubs010.jpg

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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>14
    <FILENAME>mplxubs011.jpg
    <TEXT>
    Document 14 - file: mplxubs011.jpg

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    <SEQUENCE>15
    <FILENAME>mplxubs012.jpg
    <TEXT>
    Document 15 - file: mplxubs012.jpg

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    <TYPE>GRAPHIC
    <SEQUENCE>16
    <FILENAME>mplxubs013.jpg
    <TEXT>
    Document 16 - file: mplxubs013.jpg

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    <SEQUENCE>17
    <FILENAME>mplxubs014.jpg
    <TEXT>
    Document 17 - file: mplxubs014.jpg

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    <SEQUENCE>18
    <FILENAME>mplxubs015.jpg
    <TEXT>
    Document 18 - file: mplxubs015.jpg

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    <SEQUENCE>19
    <FILENAME>mplxubs016.jpg
    <TEXT>
    Document 19 - file: mplxubs016.jpg

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    <SEQUENCE>20
    <FILENAME>mplxubs017.jpg
    <TEXT>
    Document 20 - file: mplxubs017.jpg

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    <SEQUENCE>21
    <FILENAME>mplxubs018.jpg
    <TEXT>
    Document 21 - file: mplxubs018.jpg

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    <SEQUENCE>22
    <FILENAME>mplxubs019.jpg
    <TEXT>
    Document 22 - file: mplxubs019.jpg

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    <SEQUENCE>23
    <FILENAME>mplxubs020.jpg
    <TEXT>
    Document 23 - file: mplxubs020.jpg

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    <SEQUENCE>24
    <FILENAME>mplxubs021.jpg
    <TEXT>
    Document 24 - file: mplxubs021.jpg

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    <SEQUENCE>25
    <FILENAME>mplxubs022.jpg
    <TEXT>
    Document 25 - file: mplxubs022.jpg

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    <SEQUENCE>26
    <FILENAME>mplxubs023.jpg
    <TEXT>
    Document 26 - file: mplxubs023.jpg

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    <SEQUENCE>27
    <FILENAME>mplxubs024.jpg
    <TEXT>
    Document 27 - file: mplxubs024.jpg

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    <TYPE>GRAPHIC
    <SEQUENCE>28
    <FILENAME>mplxubs025.jpg
    <TEXT>
    Document 28 - file: mplxubs025.jpg

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    <DOCUMENT>
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    <SEQUENCE>29
    <FILENAME>mplxubs026.jpg
    <TEXT>
    Document 29 - file: mplxubs026.jpg

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    <SEQUENCE>30
    <FILENAME>mplxubs027.jpg
    <TEXT>
    Document 30 - file: mplxubs027.jpg

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    <TYPE>GRAPHIC
    <SEQUENCE>31
    <FILENAME>mplxubs028.jpg
    <TEXT>
    Document 31 - file: mplxubs028.jpg

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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>32
    <FILENAME>mplxubs029.jpg
    <TEXT>
    Document 32 - file: mplxubs029.jpg

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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>33
    <FILENAME>mplxubs030.jpg
    <TEXT>
    Document 33 - file: mplxubs030.jpg

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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>34
    <FILENAME>mplxubs031.jpg
    <TEXT>
    Document 34 - file: mplxubs031.jpg

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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>35
    <FILENAME>mplxubs032.jpg
    <TEXT>
    Document 35 - file: mplxubs032.jpg

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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>36
    <FILENAME>mplxubs033.jpg
    <TEXT>
    Document 36 - file: mplxubs033.jpg

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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>37
    <FILENAME>mplxubs034.jpg
    <TEXT>
    Document 37 - file: mplxubs034.jpg

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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>38
    <FILENAME>mplxubs035.jpg
    <TEXT>
    Document 38 - file: mplxubs035.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>39
    <FILENAME>mplxubs036.jpg
    <TEXT>
    Document 39 - file: mplxubs036.jpg

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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>40
    <FILENAME>mplxubs037.jpg
    <TEXT>
    Document 40 - file: mplxubs037.jpg

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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>41
    <FILENAME>mplxubs038.jpg
    <TEXT>
    Document 41 - file: mplxubs038.jpg

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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>42
    <FILENAME>mplxubs039.jpg
    <TEXT>
    Document 42 - file: mplxubs039.jpg

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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>43
    <FILENAME>mplxubs040.jpg
    <TEXT>
    Document 43 - file: mplxubs040.jpg

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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>44
    <FILENAME>mplxubs041.jpg
    <TEXT>
    Document 44 - file: mplxubs041.jpg

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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>45
    <FILENAME>mplxubs042.jpg
    <TEXT>
    Document 45 - file: mplxubs042.jpg

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    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>46
    <FILENAME>mplxubs043.jpg
    <TEXT>
    Document 46 - file: mplxubs043.jpg

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    <TYPE>GRAPHIC
    <SEQUENCE>47
    <FILENAME>mplxubs044.jpg
    <TEXT>
    Document 47 - file: mplxubs044.jpg

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