{"product_id":"4388378-genuine-oem-cummins-def-filter-kit-isbqsb","title":"4388378 | Genuine OEM Cummins DEF Filter Kit for ISB\/QSB","description":"\u003cp data-pm-slice=\"1 1 []\"\u003e\u003cstrong\u003e\u003cspan\u003e4388378 | Genuine OEM Cummins DEF Filter Kit for ISB\/QSB\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e4388378 Genuine OEM Cummins DEF Filter Kit for ISB\/QSB is a replacement component designed for use in the Diesel Exhaust Fluid (DEF) system of compatible Cummins engines. This filter kit helps maintain proper DEF filtration and supports the intended operation of the engine aftertreatment system.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003ePRODUCT INFORMATION\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003ePart Number: 4388378\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eBrand: Cummins\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eCondition: Genuine OEM\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eComponent: DEF Filter Kit\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eFuel Type: Diesel\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eEngine Applications: Cummins ISB\/QSB (compatibility to be verified)\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eOther important specifications: Diesel Exhaust Fluid filtration system component\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eAPPLICATIONS\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe 4388378 DEF Filter Kit is intended for applicable Cummins ISB and QSB engine configurations equipped with compatible DEF and exhaust aftertreatment systems. Exact fitment should be confirmed using the original part number, engine serial number, and vehicle or equipment information.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eFUNCTION\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe 4388378 DEF Filter Kit is designed to help filter Diesel Exhaust Fluid before it reaches the relevant components of the exhaust aftertreatment system. Proper filtration helps support reliable DEF system operation and the intended function of the Selective Catalytic Reduction (SCR) emissions control system.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eA worn, clogged, damaged, or failing DEF Filter Kit may cause symptoms such as:\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• DEF system warning messages\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• SCR or aftertreatment system fault codes\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Restricted DEF flow\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• DEF dosing or emissions control performance issues\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Reduced aftertreatment system efficiency\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Engine derating or reduced power associated with emissions system faults\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eWHY REPLACE A DEF FILTER KIT?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eA clogged or damaged DEF filter can interfere with proper fluid filtration and affect the operation of the aftertreatment system. Replacing it with the correct Genuine OEM Cummins component can help maintain proper DEF filtration, support reliable emissions control operation, and reduce the risk of contamination-related issues.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eFITMENT INFORMATION\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eBefore purchasing, verify the Part Number, VIN, engine serial number, vehicle or equipment model, engine, and configuration to confirm the correct application. Do not assume compatibility based only on the ISB\/QSB engine family or the appearance of the part.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIf you are unsure whether this part is correct for your vehicle, please contact us with your VIN and original part number. We are happy to help verify compatibility before purchase.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eGENUINE CUMMINS PART\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003ePart Number: 4388378\u003c\/span\u003e\u003c\/p\u003e","brand":"Cummins","offers":[{"title":"Default Title","offer_id":49874507432195,"sku":"4388378","price":142.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0838\/9289\/6003\/files\/4388378_Fluid_Filter_1.png?v=1792186380","url":"https:\/\/truckpartsplanet.com\/es\/products\/4388378-genuine-oem-cummins-def-filter-kit-isbqsb","provider":"TRUCK PARTS PLANET","version":"1.0","type":"link"}