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  <xs:element id="dorm_CommonStockRepurchasesAbstract" abstract="true" name="CommonStockRepurchasesAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="dorm_CommonStockRepurchasesTextBlock" abstract="false" name="CommonStockRepurchasesTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="dorm_ProductPortfolioMember" abstract="true" name="ProductPortfolioMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dorm_ParentsAndOtherMember" abstract="true" name="ParentsAndOtherMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dorm_CreditAgreementMember" abstract="true" name="CreditAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dorm_A6.25PercentSeniorNotesDueJune2034Member" abstract="true" name="A6.25PercentSeniorNotesDueJune2034Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dorm_LineOfCreditFacilityCovenantTermsLeverageRatio" abstract="false" name="LineOfCreditFacilityCovenantTermsLeverageRatio" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="dorm_LineOfCreditFacilityCovenantComplianceIncreasingLeverageRatio" abstract="false" name="LineOfCreditFacilityCovenantComplianceIncreasingLeverageRatio" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="dorm_LineOfCreditFacilityCovenantComplianceInterestCoverageRatioMinimum" abstract="false" name="LineOfCreditFacilityCovenantComplianceInterestCoverageRatioMinimum" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="dorm_NumberOfReportableSegmentsDisclosedByDefinitionFlag" abstract="false" name="NumberOfReportableSegmentsDisclosedByDefinitionFlag" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:booleanItemType"/>
  <xs:element id="dorm_LightDutyMember" abstract="true" name="LightDutyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dorm_HeavyDutyMember" abstract="true" name="HeavyDutyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dorm_SpecialtyVehicleMember" abstract="true" name="SpecialtyVehicleMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dorm_SegmentReportingFactoringExpense" abstract="false" name="SegmentReportingFactoringExpense" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dorm_IEEPATariffRefundMember" abstract="true" name="IEEPATariffRefundMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dorm_IEEPATariffRefundClaimsSubmitted" abstract="false" name="IEEPATariffRefundClaimsSubmitted" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="dorm_A2026PlanMember" abstract="true" name="A2026PlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dorm_BasicAndDilutedEarningsPerShareAbstract" abstract="true" name="BasicAndDilutedEarningsPerShareAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="dorm_CommonStockRepurchasesMember" abstract="true" name="CommonStockRepurchasesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dorm_ShareRepurchaseProgramMember" abstract="true" name="ShareRepurchaseProgramMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="dorm_StockRepurchasedAndRetiredDuringPeriodAveragePurchasePrice" abstract="false" name="StockRepurchasedAndRetiredDuringPeriodAveragePurchasePrice" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
</xs:schema>
