<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4/A</documentType>

    <periodOfReport>2017-06-30</periodOfReport>

    <dateOfOriginalSubmission>2017-07-03</dateOfOriginalSubmission>

    <issuer>
        <issuerCik>0001555538</issuerCik>
        <issuerName>SunCoke Energy Partners, L.P.</issuerName>
        <issuerTradingSymbol>SXCP</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001535539</rptOwnerCik>
            <rptOwnerName>Sun Coal &amp; Coke LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1011 WARRENVILLE ROAD, STE 600</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>LISLE</rptOwnerCity>
            <rptOwnerState>IL</rptOwnerState>
            <rptOwnerZipCode>60532</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isTenPercentOwner>1</isTenPercentOwner>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Units</value>
            </securityTitle>
            <transactionDate>
                <value>2017-06-30</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>11500</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>17.6071</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>26946751</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                    <footnoteId id="F2"/>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">The purchases reported in this amended Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by Sun Coal &amp; Coke LLC on May 1, 2017.  On July 3, 2017, the reporting person (relying upon data provided by the broker) mistakenly filed a Form 4 reporting the purchase, on June 29, 2017, pursuant to the Rule 10b5-1 trading plan, of 10,500 Common Units representing limited partnership interests in the issuer.  According to corrected data subsequently provided by the broker, the actual number of Common Units purchased was 11,500, the actual date of purchase was June 30, 2017 and the actual number of Common Units beneficially owned by the reporting person following this transaction was 26,946,751.  This amended Form 4 is being filed to correct both the transaction date, the number of Common Units purchased in the original transaction and the amount owned following the transaction.</footnote>
        <footnote id="F2">Sun Coal &amp; Coke LLC (reporting person) is the record and beneficial owner of the Common Units reported on this form.  SunCoke Energy, Inc. holds 100% of the membership interests in Sun Coal &amp; Coke LLC and thus may be deemed to beneficially own Sun Coal &amp; Coke LLC's interest in the issuer, through its ability to control Sun Coal &amp; Coke LLC.  SunCoke Energy, Inc. and Sun Coal &amp; Coke LLC also may be deemed to own beneficially a 2% general partner interest in the Issuer through SunCoke Energy Partners GP LLC, a wholly owned subsidiary of Sun Coal &amp; Coke LLC. This Form 4 therefore comprises a joint  filing by Sun Coal &amp; Coke LLC and SunCoke Energy, Inc.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Rita M. Slager, attorney-in-fact</signatureName>
        <signatureDate>2017-07-13</signatureDate>
    </ownerSignature>
</ownershipDocument>
