{"product_id":"cat-nox-sensor-441-5127-03-c13-c15-scr-engine-out-sensor","title":"Stickoxidsensor NOx für Caterpillar CAT C13 C15 349D 374D 441-5127-03","description":"\u003cp data-start=\"136\" data-end=\"271\" class=\"PDq2pG_selectionAnchorContainer\"\u003e\u003cstrong data-start=\"136\" data-end=\"148\"\u003eFITMENT:\u003c\/strong\u003e\u003cbr data-start=\"148\" data-end=\"151\"\u003eCompatible with Caterpillar engines and machines equipped with SCR (Selective Catalytic Reduction) systems, including:\u003cspan aria-hidden=\"true\" class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul data-start=\"272\" data-end=\"520\"\u003e\n\u003cli data-section-id=\"m6stmy\" data-start=\"272\" data-end=\"297\"\u003eCAT C13 \/ C15 engines\u003c\/li\u003e\n\u003cli data-section-id=\"vd6qbs\" data-start=\"298\" data-end=\"331\"\u003e349D \/ 374D \/ 390F excavators\u003c\/li\u003e\n\u003cli data-section-id=\"1ky2aun\" data-start=\"332\" data-end=\"366\"\u003e785 \/ 789 \/ off-highway trucks\u003c\/li\u003e\n\u003cli data-section-id=\"16693s3\" data-start=\"367\" data-end=\"408\"\u003eD6 \/ D7 \/ D8 \/ D9 track-type tractors\u003c\/li\u003e\n\u003cli data-section-id=\"mzisvd\" data-start=\"409\" data-end=\"473\"\u003eMotor graders, loaders, and industrial SCR-equipped machines\u003c\/li\u003e\n\u003cli data-section-id=\"5ogau7\" data-start=\"474\" data-end=\"520\"\u003eMarine and generator CAT C13\/C15 platforms\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"522\" data-end=\"554\"\u003eOEM \/ Cross reference numbers:\u003c\/p\u003e\n\u003cul data-start=\"555\" data-end=\"770\"\u003e\n\u003cli data-section-id=\"elwlft\" data-start=\"555\" data-end=\"585\"\u003e\u003cstrong data-start=\"557\" data-end=\"583\"\u003e441-5127 \/ 441-5127-03\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli data-section-id=\"1nj28oj\" data-start=\"586\" data-end=\"652\"\u003e4415127 \/ 441-5128 \/ 441-5129 (related sensor family variants)\u003c\/li\u003e\n\u003cli data-section-id=\"m557f4\" data-start=\"653\" data-end=\"708\"\u003e5WK96725A (aftermarket equivalent in some listings)\u003c\/li\u003e\n\u003cli data-section-id=\"1cv6z3h\" data-start=\"709\" data-end=\"770\"\u003eCAT part family: NOx Sensor Group (engine-out SCR sensor)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"772\" data-end=\"775\"\u003e\n\u003cp data-start=\"777\" data-end=\"1051\"\u003e\u003cstrong data-start=\"777\" data-end=\"801\"\u003eSOURCE CONFIRMATION:\u003c\/strong\u003e\u003cbr data-start=\"801\" data-end=\"804\"\u003eCaterpillar NOx sensor 441-5127 is an \u003cstrong data-start=\"842\" data-end=\"880\"\u003eengine-out SCR NOx sensor assembly\u003c\/strong\u003e, used to measure exhaust nitrogen oxide levels and provide feedback to the aftertreatment control system over J1939 communication. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1053\" data-end=\"1183\"\u003eIt is a \u003cstrong data-start=\"1061\" data-end=\"1122\"\u003ecomplete NOx sensor group (probe + electronics + harness)\u003c\/strong\u003e designed specifically for closed-loop SCR emissions control.\u003c\/p\u003e\n\u003chr data-start=\"1185\" data-end=\"1188\"\u003e\n\u003cp data-start=\"1190\" data-end=\"1205\"\u003e\u003cstrong data-start=\"1190\" data-end=\"1203\"\u003eFUNCTION:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1206\" data-end=\"1516\"\u003e\n\u003cli data-section-id=\"1hxkqlo\" data-start=\"1206\" data-end=\"1264\"\u003eMeasures nitrogen oxide (NOx) levels in engine exhaust\u003c\/li\u003e\n\u003cli data-section-id=\"1xy2ijd\" data-start=\"1265\" data-end=\"1318\"\u003eSends real-time data to ECU via J1939 CAN network\u003c\/li\u003e\n\u003cli data-section-id=\"1odafgw\" data-start=\"1319\" data-end=\"1383\"\u003eProvides feedback for SCR dosing control (DEF\/AdBlue system)\u003c\/li\u003e\n\u003cli data-section-id=\"r7hkoo\" data-start=\"1384\" data-end=\"1443\"\u003eSelf-diagnosis of open\/short circuits in sensor circuit\u003c\/li\u003e\n\u003cli data-section-id=\"8rreeq\" data-start=\"1444\" data-end=\"1516\"\u003eSupports emissions compliance for off-highway EPA \/ EU Stage systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1518\" data-end=\"1521\"\u003e\n\u003cp data-start=\"1523\" data-end=\"1551\"\u003e\u003cstrong data-start=\"1523\" data-end=\"1549\"\u003eINSTALLATION POSITION:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1552\" data-end=\"1714\"\u003e\n\u003cli data-section-id=\"154djua\" data-start=\"1552\" data-end=\"1606\"\u003e\n\u003cstrong data-start=\"1554\" data-end=\"1590\"\u003eEngine-out (upstream) NOx sensor\u003c\/strong\u003e in SCR system\u003c\/li\u003e\n\u003cli data-section-id=\"1smhb7x\" data-start=\"1607\" data-end=\"1662\"\u003eMounted before SCR catalyst (pre-catalyst position)\u003c\/li\u003e\n\u003cli data-section-id=\"1ikwdc7\" data-start=\"1663\" data-end=\"1714\"\u003eWorks in combination with downstream NOx sensor\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1716\" data-end=\"1719\"\u003e\n\u003cp data-start=\"1721\" data-end=\"1823\"\u003e\u003cstrong data-start=\"1721\" data-end=\"1740\"\u003eIMPORTANT NOTE:\u003c\/strong\u003e\u003cbr data-start=\"1740\" data-end=\"1743\"\u003eCAT NOx sensor 441-5127 is part of a \u003cstrong data-start=\"1780\" data-end=\"1811\"\u003emodular sensor group system\u003c\/strong\u003e, meaning:\u003c\/p\u003e\n\u003cul data-start=\"1824\" data-end=\"2051\"\u003e\n\u003cli data-section-id=\"vxjsfq\" data-start=\"1824\" data-end=\"1880\"\u003eSensor includes electronics + probe + wiring harness\u003c\/li\u003e\n\u003cli data-section-id=\"161on64\" data-start=\"1881\" data-end=\"1949\"\u003eMust match correct engine configuration (C13 vs C15 calibration)\u003c\/li\u003e\n\u003cli data-section-id=\"14tklgk\" data-start=\"1950\" data-end=\"2002\"\u003eInlet and outlet sensors are NOT interchangeable\u003c\/li\u003e\n\u003cli data-section-id=\"bop5hi\" data-start=\"2003\" data-end=\"2051\"\u003eECU software defines correct sensor behavior\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2053\" data-end=\"2126\"\u003eIncorrect installation can cause SCR faults, derate, or emissions errors.\u003c\/p\u003e\n\u003chr data-start=\"2128\" data-end=\"2131\"\u003e\n\u003cp data-start=\"2133\" data-end=\"2143\"\u003e\u003cstrong data-start=\"2133\" data-end=\"2141\"\u003eFAQ:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"2145\" data-end=\"2263\"\u003e\u003cstrong data-start=\"2145\" data-end=\"2184\"\u003eQ1: Is this inlet or outlet sensor?\u003c\/strong\u003e\u003cbr data-start=\"2184\" data-end=\"2187\"\u003eA1: 441-5127-03 is typically used as an \u003cstrong data-start=\"2227\" data-end=\"2260\"\u003eengine-out (inlet) NOx sensor\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-start=\"2265\" data-end=\"2400\"\u003e\u003cstrong data-start=\"2265\" data-end=\"2299\"\u003eQ2: What machines does it fit?\u003c\/strong\u003e\u003cbr data-start=\"2299\" data-end=\"2302\"\u003eA2: CAT C13, C15 engines, excavators (349D, 374D), off-highway trucks, and industrial equipment.\u003c\/p\u003e\n\u003cp data-start=\"2402\" data-end=\"2522\"\u003e\u003cstrong data-start=\"2402\" data-end=\"2436\"\u003eQ3: What are failure symptoms?\u003c\/strong\u003e\u003cbr data-start=\"2436\" data-end=\"2439\"\u003eA3: SCR warning light, NOx sensor fault codes, engine derate, poor AdBlue dosing.\u003c\/p\u003e\n\u003cp data-start=\"2524\" data-end=\"2651\"\u003e\u003cstrong data-start=\"2524\" data-end=\"2570\"\u003eQ4: Are 441-5127 and 441-5127-03 the same?\u003c\/strong\u003e\u003cbr data-start=\"2570\" data-end=\"2573\"\u003eA4: Yes, 441-5127-03 is a revision\/version of the same CAT NOx sensor group.\u003c\/p\u003e\n\u003cp data-start=\"2653\" data-end=\"2774\"\u003e\u003cstrong data-start=\"2653\" data-end=\"2699\"\u003eQ5: Does installation require programming?\u003c\/strong\u003e\u003cbr data-start=\"2699\" data-end=\"2702\"\u003eA5: Some CAT machines require SCR calibration reset after replacement.\u003c\/p\u003e","brand":"ASHENG","offers":[{"title":"Default Title","offer_id":51652443635844,"sku":"441-5127-03","price":189.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0966\/8313\/1012\/files\/12_643b3e16-20bd-4fca-a9ba-bec0a11f8fa3.jpg?v=1773993137","url":"https:\/\/www.jslook.com\/de\/products\/cat-nox-sensor-441-5127-03-c13-c15-scr-engine-out-sensor","provider":"ASHENG","version":"1.0","type":"link"}