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

    <schemaVersion>X0508</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2024-06-17</periodOfReport>

    <issuer>
        <issuerCik>0000918251</issuerCik>
        <issuerName>MOTORCAR PARTS OF AMERICA INC</issuerName>
        <issuerTradingSymbol>MPAA</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001900555</rptOwnerCik>
            <rptOwnerName>BISON CAPITAL PARTNERS VI-A, L.P.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>233 WILSHIRE BOULEVARD, SUITE 425</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>SANTA MONICA</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>90401</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>true</isDirector>
            <isTenPercentOwner>true</isTenPercentOwner>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>false</aff10b5One>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2024-06-17</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>20300</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>5.73</value>
                    <footnoteId id="F2"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>270300</value>
                    <footnoteId id="F1"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Consists of securities purchased by Bison Capital Partners VI, L.P.</footnote>
        <footnote id="F2">The price reported in Column 4 is a weighted average price.  These shares were purchased in multiple transactions at prices ranging from $5.45 to $6.00, inclusive.  The reporting person undertakes to provide to Motorcar Parts of America Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote (2) to this Form 4.</footnote>
    </footnotes>

    <remarks>Douglas Trussler currently serves as representative on the registrant's board of directors for Bison Capital Partners VI, L.P. and Bison Capital Partners VI-A, L.P., and therefore each of Bison Capital Partners VI, L.P., Bison Capital Partners VI-A, L.P., and Bison Capital Partners VI GP, L.P., the general partner for each entity, may be deemed a &quot;director by deputization&quot; of the registrant. Douglas Trussler also serves as the general partner of Bison Capital Partners GP, LLC, the general partner of Bison Capital Partners VI GP, L.P., the general partner of Bison Capital Partners VI, L.P. and Bison Capital Partners VI-A, L.P.</remarks>

    <ownerSignature>
        <signatureName>Bison Capital Partners VI-A, L.P.
By: Bison Capital Partners VI GP, L.P.
Its: General Partner
By: Bison Capital Partners GP, LLC
Its: General Partner
By: /s/ Douglas Trussler
Its: Managing Member</signatureName>
        <signatureDate>2024-06-18</signatureDate>
    </ownerSignature>
</ownershipDocument>
