{"product_id":"4034393-genuine-cummins®-turbo-electronic-actuator","title":"4034393 | Genuine Cummins® Turbo Electronic Actuator","description":"\u003cp\u003e\u003cstrong\u003eDescription:\u003cbr\u003e\u003c\/strong\u003eA Turbocharger Actuator\u003cstrong\u003e 4034393\u003c\/strong\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003cstrong\u003e \u003c\/strong\u003eis a control device that manages how a turbocharger operates in an engine. Its main job is to regulate the turbo’s boost pressure so the engine gets the right amount of power without overloading or damaging components.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e: 4034393, 4034393RX, 4034393NX\u003cbr\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003cspan\u003e: New\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003eManufacture\/Brand\u003c\/strong\u003e\u003cspan\u003e: Cummins\u003cbr\u003e\u003c\/span\u003e\u003cstrong data-start=\"160\" data-end=\"176\"\u003e\u003cspan\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003cstrong\u003eFits 4034393 \u003c\/strong\u003eFor\u003cbr\u003e\u003c\/p\u003e\n\u003ctable width=\"100%\" style=\"height: 39.2px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 39.2px;\"\u003e\n\u003ctd style=\"height: 39.2px;\"\u003e\n\u003cspan\u003eCummins ISC 8.3L engines (24 Volt Only)\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eCummins ISL 8.9L engines (24 Volt Only)\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul id=\"catalogModels\" class=\"nav catalog\"\u003e\u003c\/ul\u003e\n\u003cp data-start=\"160\" data-end=\"353\"\u003e\u003cstrong\u003ePurpose of using 4034393:\u003cbr\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e \n\u003cp data-start=\"298\" data-end=\"349\"\u003e\u003cstrong data-start=\"302\" data-end=\"349\"\u003e1. Controls the Wastegate or Variable Vanes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"350\" data-end=\"399\"\u003eDepending on the type of turbo, the actuator can:\u003c\/p\u003e\n\u003cul data-start=\"400\" data-end=\"517\"\u003e\n\u003cli data-start=\"400\" data-end=\"454\"\u003e\n\u003cp data-start=\"402\" data-end=\"454\"\u003e\u003cstrong data-start=\"402\" data-end=\"430\"\u003eOpen\/close the wastegate\u003c\/strong\u003e (in wastegate turbos)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"455\" data-end=\"517\"\u003e\n\u003cp data-start=\"457\" data-end=\"517\"\u003e\u003cstrong data-start=\"457\" data-end=\"483\"\u003eAdjust the turbo vanes\u003c\/strong\u003e (in variable-geometry\/VGT turbos)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"519\" data-end=\"610\"\u003eThis controls how much exhaust gas enters the turbo, which directly affects boost pressure.\u003c\/p\u003e\n\u003cp data-start=\"617\" data-end=\"646\"\u003e\u003cstrong data-start=\"621\" data-end=\"646\"\u003e2. Prevents Overboost\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"647\" data-end=\"716\"\u003eStops the turbo from producing too much pressure, which could damage:\u003c\/p\u003e\n\u003cul data-start=\"717\" data-end=\"765\"\u003e\n\u003cli data-start=\"717\" data-end=\"728\"\u003e\n\u003cp data-start=\"719\" data-end=\"728\"\u003ePistons\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"729\" data-end=\"744\"\u003e\n\u003cp data-start=\"731\" data-end=\"744\"\u003eHead gasket\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"745\" data-end=\"765\"\u003e\n\u003cp data-start=\"747\" data-end=\"765\"\u003eEngine internals\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"772\" data-end=\"803\"\u003e\u003cstrong data-start=\"776\" data-end=\"803\"\u003e3. Improves Performance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"804\" data-end=\"838\"\u003eBy regulating boost precisely, it:\u003c\/p\u003e\n\u003cul data-start=\"839\" data-end=\"918\"\u003e\n\u003cli data-start=\"839\" data-end=\"858\"\u003e\n\u003cp data-start=\"841\" data-end=\"858\"\u003eIncreases power\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"859\" data-end=\"889\"\u003e\n\u003cp data-start=\"861\" data-end=\"889\"\u003eImproves throttle response\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"890\" data-end=\"918\"\u003e\n\u003cp data-start=\"892\" data-end=\"918\"\u003eEnhances fuel efficiency\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"925\" data-end=\"964\"\u003e\u003cstrong data-start=\"929\" data-end=\"964\"\u003e4. Helps With Emissions Control\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"965\" data-end=\"995\"\u003eCorrect turbo operation keeps:\u003c\/p\u003e\n\u003cul data-start=\"996\" data-end=\"1087\"\u003e\n\u003cli data-start=\"996\" data-end=\"1026\"\u003e\n\u003cp data-start=\"998\" data-end=\"1026\"\u003eExhaust pressure regulated\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1027\" data-end=\"1087\"\u003e\n\u003cp data-start=\"1029\" data-end=\"1087\"\u003eAir\/fuel ratio balanced\u003cbr data-start=\"1052\" data-end=\"1055\"\u003eWhich reduces harmful emissions.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp data-start=\"160\" data-end=\"353\"\u003e\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\u003cstrong data-start=\"585\" data-end=\"597\"\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSigns of a Bad Turbocharger Actuator 4034393:\u003cbr\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp data-end=\"330\" data-start=\"286\"\u003e\u003cstrong data-end=\"330\" data-start=\"293\"\u003e1. Warning Lights and Fault Codes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"695\" data-start=\"331\"\u003e\n\u003cli data-end=\"406\" data-start=\"331\"\u003e\n\u003cp data-end=\"406\" data-start=\"333\"\u003e\u003cstrong data-end=\"357\" data-start=\"333\"\u003e“Check Engine” light\u003c\/strong\u003e or \u003cstrong data-end=\"383\" data-start=\"361\"\u003e“DEF system fault”\u003c\/strong\u003e message on the dash.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"520\" data-start=\"407\"\u003e\n\u003cp data-end=\"520\" data-start=\"409\"\u003e\u003cstrong data-end=\"449\" data-start=\"409\"\u003eSCR or emissions-related fault codes\u003c\/strong\u003e (often starting with \u003cstrong data-end=\"480\" data-start=\"471\"\u003eP20xx\u003c\/strong\u003e, such as P203F, P205B, P206A, P207F).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"614\" data-start=\"521\"\u003e\n\u003cp data-end=\"614\" data-start=\"523\"\u003e\u003cstrong data-end=\"552\" data-start=\"523\"\u003eDEF quality sensor errors\u003c\/strong\u003e or \u003cstrong data-end=\"593\" data-start=\"556\"\u003etemperature sensor circuit faults\u003c\/strong\u003e stored in the ECM.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"695\" data-start=\"615\"\u003e\n\u003cp data-end=\"695\" data-start=\"617\"\u003e\u003cstrong data-end=\"641\" data-start=\"617\"\u003e“Service DEF system”\u003c\/strong\u003e or \u003cstrong data-end=\"683\" data-start=\"645\"\u003e“Vehicle will derate in XXX miles”\u003c\/strong\u003e messages.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"743\" data-start=\"702\"\u003e\u003cstrong data-end=\"743\" data-start=\"709\"\u003e2. Incorrect DEF Level Reading\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"989\" data-start=\"744\"\u003e\n\u003cli data-end=\"823\" data-start=\"744\"\u003e\n\u003cp data-end=\"823\" data-start=\"746\"\u003eDEF gauge shows \u003cstrong data-end=\"792\" data-start=\"762\"\u003eempty or full all the time\u003c\/strong\u003e, regardless of actual level.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"989\" data-start=\"824\"\u003e\n\u003cp data-end=\"989\" data-start=\"826\"\u003eGauge fluctuates or drops suddenly after refilling the DEF tank.\u003cbr data-end=\"893\" data-start=\"890\"\u003e\u003cem data-end=\"904\" data-start=\"896\"\u003eCause:\u003c\/em\u003e DEF level sensor inside the header is malfunctioning or covered in crystallized DEF.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"1038\" data-start=\"996\"\u003e\u003cstrong data-end=\"1038\" data-start=\"1004\"\u003e3. DEF Freezing or Not Thawing\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"1253\" data-start=\"1039\"\u003e\n\u003cli data-end=\"1120\" data-start=\"1039\"\u003e\n\u003cp data-end=\"1120\" data-start=\"1041\"\u003eIn cold weather, the system \u003cstrong data-end=\"1095\" data-start=\"1069\"\u003etakes too long to thaw\u003c\/strong\u003e or never thaws at all.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1253\" data-start=\"1121\"\u003e\n\u003cp data-end=\"1253\" data-start=\"1123\"\u003eThe engine may \u003cstrong data-end=\"1148\" data-start=\"1138\"\u003ederate\u003c\/strong\u003e because frozen DEF can’t be injected.\u003cbr data-end=\"1189\" data-start=\"1186\"\u003e\u003cem data-end=\"1200\" data-start=\"1192\"\u003eCause:\u003c\/em\u003e The \u003cstrong data-end=\"1223\" data-start=\"1205\"\u003eheater element\u003c\/strong\u003e in the DEF header has failed.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"1309\" data-start=\"1260\"\u003e\u003cstrong data-end=\"1309\" data-start=\"1267\"\u003e4. DEF Quality or Concentration Errors\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"1513\" data-start=\"1310\"\u003e\n\u003cli data-end=\"1513\" data-start=\"1310\"\u003e\n\u003cp data-end=\"1513\" data-start=\"1312\"\u003eECU reports \u003cstrong data-end=\"1344\" data-start=\"1324\"\u003epoor DEF quality\u003c\/strong\u003e or \u003cstrong data-end=\"1380\" data-start=\"1348\"\u003eincorrect urea concentration\u003c\/strong\u003e even when fresh DEF is used.\u003cbr data-end=\"1412\" data-start=\"1409\"\u003e\u003cem data-end=\"1423\" data-start=\"1415\"\u003eCause:\u003c\/em\u003e The \u003cstrong data-end=\"1446\" data-start=\"1428\"\u003equality sensor\u003c\/strong\u003e inside the header is faulty or contaminated with crystallized DEF.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"1567\" data-start=\"1520\"\u003e\u003cstrong data-end=\"1567\" data-start=\"1527\"\u003e5. Engine Derate or Power Limitation\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"1798\" data-start=\"1568\"\u003e\n\u003cli data-end=\"1798\" data-start=\"1568\"\u003e\n\u003cp data-end=\"1798\" data-start=\"1570\"\u003eThe truck goes into \u003cstrong data-end=\"1603\" data-start=\"1590\"\u003elimp mode\u003c\/strong\u003e or \u003cstrong data-end=\"1649\" data-start=\"1607\"\u003ereduces speed (e.g., limited to 5 mph)\u003c\/strong\u003e after warnings are ignored.\u003cbr data-end=\"1680\" data-start=\"1677\"\u003e\u003cem data-end=\"1691\" data-start=\"1683\"\u003eCause:\u003c\/em\u003e The ECM forces derate to prevent emissions violations if it detects the SCR system isn’t working properly.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"1851\" data-start=\"1805\"\u003e\u003cstrong data-end=\"1851\" data-start=\"1812\"\u003e6. Crystallization or Contamination\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"2099\" data-start=\"1852\"\u003e\n\u003cli data-end=\"1934\" data-start=\"1852\"\u003e\n\u003cp data-end=\"1934\" data-start=\"1854\"\u003eVisible \u003cstrong data-end=\"1880\" data-start=\"1862\"\u003ewhite crystals\u003c\/strong\u003e or buildup around the DEF tank or header connector.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"2099\" data-start=\"1935\"\u003e\n\u003cp data-end=\"2099\" data-start=\"1937\"\u003e\u003cstrong data-end=\"1964\" data-start=\"1937\"\u003ePoor electrical contact\u003c\/strong\u003e due to corrosion or DEF leakage.\u003cbr data-end=\"2000\" data-start=\"1997\"\u003e\u003cem data-end=\"2011\" data-start=\"2003\"\u003eCause:\u003c\/em\u003e DEF exposure to air causes crystallization, which can damage sensors or block passages.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp data-start=\"97\" data-end=\"476\"\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003eAbout the Manufacturer – \u003c\/span\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003eCummins:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"0\" data-end=\"381\"\u003eCummins is a leading American manufacturer of diesel and natural gas engines, as well as power generation systems and emissions solutions. Founded in 1919 and headquartered in Columbus, Indiana, Cummins is known globally for its durable, high-performance engines used in trucks, buses, construction equipment, agriculture, and power systems.\u003c\/p\u003e\n\u003cp data-start=\"383\" data-end=\"628\"\u003eThe brand is widely respected for its innovation in clean diesel technology, including aftertreatment systems, turbochargers, and advanced electronics that help reduce emissions while maximizing engine efficiency and reliability.\u003c\/p\u003e","brand":"Cummins","offers":[{"title":"Default Title","offer_id":50707366183159,"sku":"4034393","price":1499.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0895\/7080\/3959\/files\/IMG_3288-Photoroom_08f41f86-d9e4-49e6-8882-7955cd0cb34b.webp?v=1776875929","url":"https:\/\/forcetruckparts.com\/products\/4034393-genuine-cummins%c2%ae-turbo-electronic-actuator","provider":"Force Truck Parts","version":"1.0","type":"link"}