<SEC-DOCUMENT>0000763744-17-000044.txt : 20170224
<SEC-HEADER>0000763744-17-000044.hdr.sgml : 20170224
<ACCEPTANCE-DATETIME>20170224151707
ACCESSION NUMBER:		0000763744-17-000044
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20170222
FILED AS OF DATE:		20170224
DATE AS OF CHANGE:		20170224

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			LCI INDUSTRIES
		CENTRAL INDEX KEY:			0000763744
		STANDARD INDUSTRIAL CLASSIFICATION:	MOTOR VEHICLE PARTS & ACCESSORIES [3714]
		IRS NUMBER:				133250533
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		3501 COUNTY ROAD 6 EAST
		CITY:			ELKHART
		STATE:			IN
		ZIP:			46514
		BUSINESS PHONE:		5745351125

	MAIL ADDRESS:	
		STREET 1:		3501 COUNTY ROAD 6 EAST
		CITY:			ELKHART
		STATE:			IN
		ZIP:			46514

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	DREW INDUSTRIES INC
		DATE OF NAME CHANGE:	20161220

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	DREW INDUSTRIES Inc
		DATE OF NAME CHANGE:	20150408

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	DREW INDUSTRIES INC
		DATE OF NAME CHANGE:	19920703

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			REED DAVID A
		CENTRAL INDEX KEY:			0001192096

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-13646
		FILM NUMBER:		17636803

	MAIL ADDRESS:	
		STREET 1:		TEXAS INDUSTRIES INC
		STREET 2:		1341 W MOCKINGBIRD LN
		CITY:			DALLAS
		STATE:			TX
		ZIP:			75247
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>wf-form4_148796741484968.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2017-02-22</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000763744</issuerCik>
        <issuerName>LCI INDUSTRIES</issuerName>
        <issuerTradingSymbol>LCII</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001192096</rptOwnerCik>
            <rptOwnerName>REED DAVID A</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O LCI INDUSTRIES</rptOwnerStreet1>
            <rptOwnerStreet2>3501 COUNTY ROAD 6 EAST</rptOwnerStreet2>
            <rptOwnerCity>ELKHART</rptOwnerCity>
            <rptOwnerState>IN</rptOwnerState>
            <rptOwnerZipCode>46514</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2017-02-22</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>1000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>110.36</value>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>35835</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">This transaction was executed in multiple trades at prices ranging from $110.10 to $110.65; the price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide full information regarding the number of shares and prices at which the transactions were effected upon request to the SEC staff, the issuer, or a security holder of the issuer.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Brian M. Hall on behalf of David A. Reed</signatureName>
        <signatureDate>2017-02-24</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
