<SUBMISSION>
<ACCESSION-NUMBER>0001022321-06-000049
<TYPE>4
<PUBLIC-DOCUMENT-COUNT>1
<PERIOD>20060829
<FILING-DATE>20060830
<DATE-OF-FILING-DATE-CHANGE>20060830
<REPORTING-OWNER>
<OWNER-DATA>
<CONFORMED-NAME>MAZOCH KERRY W
<CIK>0001162165
</OWNER-DATA>
<FILING-VALUES>
<FORM-TYPE>4
<ACT>34
<FILE-NUMBER>001-12295
<FILM-NUMBER>061066480
</FILING-VALUES>
<BUSINESS-ADDRESS>
<STREET1>500 DALLAS STE 2500
<CITY>HOUSTON
<STATE>TX
<ZIP>77002
<PHONE>713 860 2500
</BUSINESS-ADDRESS>
</REPORTING-OWNER>
<ISSUER>
<COMPANY-DATA>
<CONFORMED-NAME>GENESIS ENERGY LP
<CIK>0001022321
<ASSIGNED-SIC>5171
<IRS-NUMBER>760513049
<STATE-OF-INCORPORATION>DE
<FISCAL-YEAR-END>1205
</COMPANY-DATA>
<BUSINESS-ADDRESS>
<STREET1>500 DALLAS SUITE 2500
<CITY>HOUSTON
<STATE>TX
<ZIP>77002
<PHONE>7138602500
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>500 DALLAS SUITE 2500
<CITY>HOUSTON
<STATE>TX
<ZIP>77002
</MAIL-ADDRESS>
</ISSUER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2006-08-29</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001022321</issuerCik>
        <issuerName>GENESIS ENERGY LP</issuerName>
        <issuerTradingSymbol>GEL</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001162165</rptOwnerCik>
            <rptOwnerName>MAZOCH KERRY W</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>500 DALLAS, SUITE 2500</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>HOUSTON</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>77002</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Vice President</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Stock Appreciation Right</value>
                <footnoteId id="F1"/>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>16.95</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2006-08-29</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>949</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>16.95</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2010-01-01</value>
            </exerciseDate>
            <expirationDate>
                <value>2015-12-31</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Genesis Energy, L.P. Limited Partnership Units</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>949</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>23350</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">The stock appreciation right provides the grantee the right to receive cash upon exercise of the right for the difference between the strike price and the average of the closing market price of GEL limited partnership units for the ten days preceding the exercise date.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>Kerry W. Mazoch</signatureName>
        <signatureDate>2006-08-30</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SUBMISSION>
