{"product_id":"diesel-oxidation-catalyst-doc-172x80mm","title":"Diesel Oxidation Catalyst (DOC) for diesel vehicles, 172x80mm, 400 CPSI, ceramic honeycomb substrate, 50 g\/ft³ (platinum-group metal loading)","description":"\u003cbody\u003e\n\n\n  \u003cmeta charset=\"UTF-8\"\u003e\n  \u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\n\n  \u003ctitle\u003e172×80mm Diesel Oxidation Catalyst (DOC) | 400 CPSI\u003c\/title\u003e\n  \u003cmeta name=\"description\" content=\"Explore a 172×80mm diesel oxidation catalyst with a 400 CPSI ceramic honeycomb substrate and 50 g\/ft³ PGM loading for diesel exhaust applications.\"\u003e\n\n  \u003cstyle\u003e\n    * {\n      box-sizing: border-box;\n    }\n\n    body {\n      margin: 0;\n      color: #243247;\n      background: #f5f7fa;\n      font-family: Arial, Helvetica, sans-serif;\n      line-height: 1.7;\n    }\n\n    main {\n      max-width: 1080px;\n      margin: 0 auto;\n      padding: 32px 20px;\n    }\n\n    article {\n      overflow: hidden;\n      background: #ffffff;\n      border: 1px solid #e2e8f0;\n      border-radius: 16px;\n    }\n\n    header {\n      padding: 48px 36px;\n      color: #ffffff;\n      background: #142c47;\n    }\n\n    .eyebrow {\n      margin: 0 0 12px;\n      color: #9cd9ed;\n      font-size: 13px;\n      font-weight: 700;\n      letter-spacing: 1.5px;\n      text-transform: uppercase;\n    }\n\n    h1 {\n      margin: 0 0 20px;\n      font-size: clamp(28px, 5vw, 42px);\n      line-height: 1.2;\n    }\n\n    header p {\n      max-width: 780px;\n      margin: 0;\n      color: #e1eaf4;\n    }\n\n    .spec-highlights {\n      display: flex;\n      flex-wrap: wrap;\n      gap: 10px;\n      margin-top: 24px;\n    }\n\n    .spec-highlights span {\n      padding: 7px 14px;\n      border: 1px solid #62758c;\n      border-radius: 6px;\n      font-size: 14px;\n    }\n\n    section {\n      padding: 32px 36px;\n      border-top: 1px solid #e2e8f0;\n    }\n\n    h2 {\n     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     padding: 22px;\n      background: #f5f8fb;\n      border: 1px solid #e2e8f0;\n      border-radius: 10px;\n    }\n\n    ul {\n      margin: 16px 0;\n      padding-left: 24px;\n    }\n\n    li {\n      margin-bottom: 8px;\n    }\n\n    .note {\n      margin-top: 20px;\n      padding: 16px 20px;\n      color: #46566a;\n      background: #f0f6fa;\n      border-left: 4px solid #287d9e;\n    }\n\n    details {\n      padding: 18px 0;\n      border-bottom: 1px solid #e2e8f0;\n    }\n\n    details:last-child {\n      border-bottom: 0;\n    }\n\n    summary {\n      color: #142c47;\n      font-weight: 700;\n      cursor: pointer;\n    }\n\n    details p {\n      margin-top: 12px;\n    }\n\n    .quote {\n      background: #edf5fa;\n    }\n\n    @media (max-width: 640px) {\n      main {\n        padding: 16px 12px;\n      }\n\n      header {\n        padding: 32px 22px;\n      }\n\n      section {\n        padding: 26px 22px;\n      }\n\n      .features {\n        grid-template-columns: 1fr;\n      }\n\n      th,\n      td {\n        padding: 12px;\n      }\n    }\n  \u003c\/style\u003e\n\n\n\n  \u003cmain\u003e\n    \u003carticle aria-labelledby=\"product-title\"\u003e\n\n      \u003cheader\u003e\n        \u003cp class=\"eyebrow\"\u003eDiesel Exhaust Aftertreatment\u003c\/p\u003e\n\n        \u003ch1 id=\"product-title\"\u003e\n          Diesel Oxidation Catalyst (DOC), 172 × 80 mm\n        \u003c\/h1\u003e\n\n        \u003cp\u003e\n          Ceramic honeycomb diesel oxidation catalyst featuring\n          400 CPSI cell density and 50 g\/ft³ platinum-group metal\n          loading, intended for integration into compatible\n          diesel vehicle exhaust aftertreatment systems.\n        \u003c\/p\u003e\n\n        \u003cdiv class=\"spec-highlights\" aria-label=\"Key specifications\"\u003e\n          \u003cspan\u003e172 × 80 mm\u003c\/span\u003e\n          \u003cspan\u003e400 CPSI\u003c\/span\u003e\n          \u003cspan\u003eCeramic Honeycomb\u003c\/span\u003e\n          \u003cspan\u003e50 g\/ft³ PGM\u003c\/span\u003e\n        \u003c\/div\u003e\n      \u003c\/header\u003e\n\n      \u003c!--\n        Add an actual product photograph here when available.\n        Suggested alt text:\n        172 × 80 mm diesel oxidation catalyst with\n        400 CPSI ceramic honeycomb substrate\n      --\u003e\n\n      \u003csection aria-labelledby=\"overview-title\"\u003e\n        \u003ch2 id=\"overview-title\"\u003eProduct Overview\u003c\/h2\u003e\n\n        \u003cp\u003e\n          This diesel oxidation catalyst combines a ceramic\n          honeycomb substrate with a platinum-group metal (PGM)\n          catalytic coating. Its specified size of 172 × 80 mm,\n          cell density of 400 CPSI, and PGM loading of 50 g\/ft³\n          provide key specifications for evaluating its suitability\n          for a diesel exhaust system.\n        \u003c\/p\u003e\n\n        \u003cp\u003e\n          Product selection should take account of installation\n          dimensions, exhaust flow, operating temperatures, and\n          the required emissions performance.\n        \u003c\/p\u003e\n      \u003c\/section\u003e\n\n      \u003csection aria-labelledby=\"specifications-title\"\u003e\n        \u003ch2 id=\"specifications-title\"\u003eTechnical Specifications\u003c\/h2\u003e\n\n        \u003cdiv class=\"table-wrapper\"\u003e\n          \u003ctable\u003e\n            \u003ccaption\u003e\n              Supplied specifications for the 172 × 80 mm DOC.\n            \u003c\/caption\u003e\n\n            \u003cthead\u003e\n              \u003ctr\u003e\n                \u003cth scope=\"col\"\u003eParameter\u003c\/th\u003e\n                \u003cth scope=\"col\"\u003eSpecification\u003c\/th\u003e\n              \u003c\/tr\u003e\n            \u003c\/thead\u003e\n\n            \u003ctbody\u003e\n              \u003ctr\u003e\n                \u003cth scope=\"row\"\u003eProduct Type\u003c\/th\u003e\n                \u003ctd\u003eDiesel Oxidation Catalyst (DOC)\u003c\/td\u003e\n              \u003c\/tr\u003e\n              \u003ctr\u003e\n                \u003cth scope=\"row\"\u003eIntended Application\u003c\/th\u003e\n                \u003ctd\u003eDiesel vehicle exhaust aftertreatment\u003c\/td\u003e\n              \u003c\/tr\u003e\n              \u003ctr\u003e\n                \u003cth scope=\"row\"\u003eSpecified Size\u003c\/th\u003e\n                \u003ctd\u003e172 × 80 mm\u003c\/td\u003e\n              \u003c\/tr\u003e\n              \u003ctr\u003e\n                \u003cth scope=\"row\"\u003eSubstrate Material\u003c\/th\u003e\n                \u003ctd\u003eCeramic\u003c\/td\u003e\n              \u003c\/tr\u003e\n              \u003ctr\u003e\n                \u003cth scope=\"row\"\u003eSubstrate Structure\u003c\/th\u003e\n                \u003ctd\u003eHoneycomb\u003c\/td\u003e\n              \u003c\/tr\u003e\n              \u003ctr\u003e\n                \u003cth scope=\"row\"\u003eCell Density\u003c\/th\u003e\n                \u003ctd\u003e400 CPSI — cells per square inch\u003c\/td\u003e\n              \u003c\/tr\u003e\n              \u003ctr\u003e\n                \u003cth scope=\"row\"\u003ePGM Loading\u003c\/th\u003e\n                \u003ctd\u003e50 g\/ft³\u003c\/td\u003e\n              \u003c\/tr\u003e\n              \u003ctr\u003e\n                \u003cth scope=\"row\"\u003eVehicle Compatibility\u003c\/th\u003e\n                \u003ctd\u003eRequires application-specific confirmation\u003c\/td\u003e\n              \u003c\/tr\u003e\n            \u003c\/tbody\u003e\n          \u003c\/table\u003e\n        \u003c\/div\u003e\n\n        \u003cp class=\"note\"\u003e\n          Confirm dimension orientation and manufacturing tolerances\n          against the product drawing before ordering.\n        \u003c\/p\u003e\n      \u003c\/section\u003e\n\n      \u003csection aria-labelledby=\"features-title\"\u003e\n        \u003ch2 id=\"features-title\"\u003eKey Features\u003c\/h2\u003e\n\n        \u003cdiv class=\"features\"\u003e\n          \u003cdiv class=\"feature\"\u003e\n            \u003ch3\u003eCeramic Honeycomb Substrate\u003c\/h3\u003e\n            \u003cp\u003e\n              A multi-channel ceramic structure provides a surface\n              for the catalytic coating and passages for exhaust\n              gas flow.\n            \u003c\/p\u003e\n          \u003c\/div\u003e\n\n          \u003cdiv class=\"feature\"\u003e\n            \u003ch3\u003e400 CPSI Cell Density\u003c\/h3\u003e\n            \u003cp\u003e\n              A defined channel density for evaluation alongside\n              substrate wall thickness, exhaust flow, and permitted\n              system backpressure.\n            \u003c\/p\u003e\n          \u003c\/div\u003e\n\n          \u003cdiv class=\"feature\"\u003e\n            \u003ch3\u003e50 g\/ft³ PGM Loading\u003c\/h3\u003e\n            \u003cp\u003e\n              Specifies the platinum-group metal loading per unit\n              substrate volume. Individual metal composition and\n              ratios should be confirmed separately.\n            \u003c\/p\u003e\n          \u003c\/div\u003e\n\n          \u003cdiv class=\"feature\"\u003e\n            \u003ch3\u003e172 × 80 mm Size\u003c\/h3\u003e\n            \u003cp\u003e\n              A specified size for checking installation space\n              and housing compatibility during exhaust system\n              design and component selection.\n            \u003c\/p\u003e\n          \u003c\/div\u003e\n        \u003c\/div\u003e\n      \u003c\/section\u003e\n\n      \u003csection aria-labelledby=\"operation-title\"\u003e\n        \u003ch2 id=\"operation-title\"\u003e\n          How Does a Diesel Oxidation Catalyst Work?\n        \u003c\/h2\u003e\n\n        \u003cp\u003e\n          A DOC promotes oxidation reactions in diesel exhaust.\n          Its primary role is to help convert carbon monoxide (CO)\n          and unburned hydrocarbons (HC) into carbon dioxide\n          and water.\n        \u003c\/p\u003e\n\n        \u003cp\u003e\n          Actual conversion performance depends on catalyst\n          formulation, exhaust temperature, gas composition,\n          flow rate, and catalyst condition. The specifications\n          listed here do not establish a particular conversion\n          efficiency.\n        \u003c\/p\u003e\n      \u003c\/section\u003e\n\n      \u003csection aria-labelledby=\"compatibility-title\"\u003e\n        \u003ch2 id=\"compatibility-title\"\u003e\n          Application and Compatibility\n        \u003c\/h2\u003e\n\n        \u003cp\u003e\n          This ceramic DOC is intended for diesel vehicle exhaust\n          systems where its dimensions and catalyst specifications\n          meet the system design requirements.\n        \u003c\/p\u003e\n\n        \u003cp\u003eBefore ordering, confirm the following:\u003c\/p\u003e\n\n        \u003cul\u003e\n          \u003cli\u003eRequired catalyst dimensions and installation space.\u003c\/li\u003e\n          \u003cli\u003eEngine displacement and exhaust flow range.\u003c\/li\u003e\n          \u003cli\u003eExhaust operating temperatures and fuel specifications.\u003c\/li\u003e\n          \u003cli\u003ePermitted backpressure and housing requirements.\u003c\/li\u003e\n          \u003cli\u003e\n            Required emissions performance and supporting test data.\n          \u003c\/li\u003e\n        \u003c\/ul\u003e\n\n        \u003cp class=\"note\"\u003e\n          Size, cell density, and PGM loading alone do not establish\n          vehicle compatibility or compliance with a particular\n          emissions standard.\n        \u003c\/p\u003e\n      \u003c\/section\u003e\n\n      \u003csection aria-labelledby=\"faq-title\"\u003e\n        \u003ch2 id=\"faq-title\"\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n        \u003cdetails open\u003e\n          \u003csummary\u003eWhat does 400 CPSI mean?\u003c\/summary\u003e\n          \u003cp\u003e\n            CPSI means cells per square inch. A 400 CPSI honeycomb\n            has approximately 400 channels per square inch of\n            its cross-sectional area.\n          \u003c\/p\u003e\n        \u003c\/details\u003e\n\n        \u003cdetails open\u003e\n          \u003csummary\u003eWhat does 50 g\/ft³ PGM loading mean?\u003c\/summary\u003e\n          \u003cp\u003e\n            It describes the mass of platinum-group metals per\n            cubic foot of substrate volume. It does not mean\n            that each catalyst contains 50 grams of precious\n            metal, and it does not specify the individual\n            metal ratio.\n          \u003c\/p\u003e\n        \u003c\/details\u003e\n\n        \u003cdetails open\u003e\n          \u003csummary\u003e\n            Is this DOC suitable for every diesel vehicle?\n          \u003c\/summary\u003e\n          \u003cp\u003e\n            Compatibility must be checked against the engine,\n            exhaust system, installation dimensions, and required\n            performance. It is not established by product\n            size alone.\n          \u003c\/p\u003e\n        \u003c\/details\u003e\n\n        \u003cdetails open\u003e\n          \u003csummary\u003e\n            Does this specification confirm an emissions certification?\n          \u003c\/summary\u003e\n          \u003cp\u003e\n            No. Any emissions certification or compliance claim\n            must be supported by documentation and testing\n            applicable to the intended vehicle or system.\n          \u003c\/p\u003e\n        \u003c\/details\u003e\n      \u003c\/section\u003e\n\n      \u003csection class=\"quote\" aria-labelledby=\"quote-title\"\u003e\n        \u003ch2 id=\"quote-title\"\u003eRequest a Quote\u003c\/h2\u003e\n\n        \u003cp\u003e\n          Looking for a 172 × 80 mm diesel oxidation catalyst\n          with 400 CPSI and 50 g\/ft³ PGM loading?\n          Send your required quantity, installation drawing,\n          engine information, and target performance requirements\n          to request a quotation and confirm suitability.\n        \u003c\/p\u003e\n\n        \u003c!-- Add your verified contact link or inquiry form here. --\u003e\n      \u003c\/section\u003e\n\n    \u003c\/article\u003e\n  \u003c\/main\u003e\n\n\u003c\/body\u003e","brand":"KSRCAT","offers":[{"title":"172x80mm \/ 50g\/cft \/ 400","offer_id":50785338785978,"sku":null,"price":229.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0633\/4493\/5098\/files\/1_04d9eeec-528c-4df3-989a-730d176859c4.jpg?v=1792420281","url":"https:\/\/ksrcat.com\/es\/products\/diesel-oxidation-catalyst-doc-172x80mm","provider":"SHANGHAI KESAIRAY AUTO PARTS CO LTD","version":"1.0","type":"link"}