{"product_id":"5405857-genuine-cummins®-exhaust-gas-recirculation-valve-6-7","title":"5405857 | Genuine Cummins® Exhaust Gas Recirculation Valve With Gaskets 6.7","description":"\u003cp\u003e\u003cstrong\u003eDescription\u003c\/strong\u003e:\u003cbr\u003eAn EGR valve \u003cstrong\u003e5405857 \u003c\/strong\u003estands for Exhaust Gas Recirculation valve. It’s a component used in many gasoline and diesel engines to help reduce emissions and improve efficiency. Exhaust Gas Recirculation Valve With Gaskets 6.7\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e: 5405857, 5405857RX\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\u003cbr\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003cstrong\u003eFits 5405857 \u003c\/strong\u003eFor Cummins Engines B6.7 CM2350 B121B, B6.7 CM2450 B155B, ISB (Chrysler)\u003c\/p\u003e\n\u003cp data-end=\"703\" data-start=\"585\"\u003e\u003cstrong data-end=\"597\" data-start=\"585\"\u003ePurpose of using 5405857\u003c\/strong\u003e\u003cstrong data-end=\"597\" data-start=\"585\"\u003e:\u003c\/strong\u003e\u003cbr data-end=\"600\" data-start=\"597\"\u003e\u003c\/p\u003e\n\u003ctable width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp data-start=\"318\" data-end=\"366\"\u003e\u003cstrong\u003e1. Reduce nitrogen oxide (NOx) emissions\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"367\" data-end=\"502\"\u003eBy recirculating a small amount of exhaust gas back into the cylinders, the combustion temperature lowers, which reduces NOx formation.\u003c\/p\u003e\n\u003cp data-start=\"504\" data-end=\"544\"\u003e\u003cstrong data-start=\"508\" data-end=\"544\"\u003e2. Improve combustion efficiency\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"545\" data-end=\"653\"\u003eDiluting the air-fuel mixture under certain conditions can help the engine run smoother and reduce knocking.\u003c\/p\u003e\n\u003cp data-start=\"655\" data-end=\"704\"\u003e\u003cstrong data-start=\"659\" data-end=\"704\"\u003e3. Improve fuel economy (in some engines)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"705\" data-end=\"761\"\u003eEspecially on highway cruising or light-load situations.\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp data-end=\"476\" data-start=\"97\"\u003e\u003cstrong data-end=\"151\" data-start=\"97\"\u003e\u003cbr\u003eSings of Bad EGR Valve 5405857\u003c\/strong\u003e\u003cstrong data-end=\"151\" data-start=\"97\"\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=\"301\" data-start=\"262\"\u003e\u003cstrong data-end=\"301\" data-start=\"265\"\u003e1. Rough Idle or Engine Stalling\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-end=\"380\" data-start=\"302\"\u003eA stuck-open EGR valve lets too much exhaust into the intake at idle, causing:\u003c\/p\u003e\n\u003cul data-end=\"436\" data-start=\"381\"\u003e\n\u003cli data-end=\"402\" data-start=\"381\"\u003e\n\u003cp data-end=\"402\" data-start=\"383\"\u003eRough, shaky idle\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"436\" data-start=\"403\"\u003e\n\u003cp data-end=\"436\" data-start=\"405\"\u003eEngine stalling when stopping\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"465\" data-start=\"438\"\u003e\u003cstrong data-end=\"465\" data-start=\"441\"\u003e2. Poor Acceleration\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-end=\"534\" data-start=\"466\"\u003eA stuck-closed EGR valve can raise combustion temperatures, causing:\u003c\/p\u003e\n\u003cul data-end=\"615\" data-start=\"535\"\u003e\n\u003cli data-end=\"574\" data-start=\"535\"\u003e\n\u003cp data-end=\"574\" data-start=\"537\"\u003eHesitation or sluggish acceleration\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"615\" data-start=\"575\"\u003e\n\u003cp data-end=\"615\" data-start=\"577\"\u003eLoss of power, especially under load\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"651\" data-start=\"617\"\u003e\u003cstrong data-end=\"651\" data-start=\"620\"\u003e3. Check Engine Light (CEL)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-end=\"699\" data-start=\"652\"\u003eThe ECU will often trigger fault codes such as:\u003c\/p\u003e\n\u003cul data-end=\"804\" data-start=\"700\"\u003e\n\u003cli data-end=\"739\" data-start=\"700\"\u003e\n\u003cp data-end=\"739\" data-start=\"702\"\u003e\u003cstrong data-end=\"717\" data-start=\"702\"\u003eP0400–P0409\u003c\/strong\u003e (EGR system faults)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"773\" data-start=\"740\"\u003e\n\u003cp data-end=\"773\" data-start=\"742\"\u003e\u003cstrong data-end=\"751\" data-start=\"742\"\u003eP0401\u003c\/strong\u003e (insufficient flow)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"804\" data-start=\"774\"\u003e\n\u003cp data-end=\"804\" data-start=\"776\"\u003e\u003cstrong data-end=\"785\" data-start=\"776\"\u003eP0402\u003c\/strong\u003e (excessive flow)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"842\" data-start=\"806\"\u003e\u003cstrong data-end=\"842\" data-start=\"809\"\u003e4. Increased Fuel Consumption\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-end=\"926\" data-start=\"843\"\u003eIncorrect EGR flow can make the air-fuel mixture inefficient, leading to worse MPG.\u003c\/p\u003e\n\u003cp data-end=\"961\" data-start=\"928\"\u003e\u003cstrong data-end=\"961\" data-start=\"931\"\u003e5. Engine Knocking or Ping\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-end=\"1024\" data-start=\"962\"\u003eIf the valve is stuck closed, combustion temps rise and cause:\u003c\/p\u003e\n\u003cul data-end=\"1091\" data-start=\"1025\"\u003e\n\u003cli data-end=\"1053\" data-start=\"1025\"\u003e\n\u003cp data-end=\"1053\" data-start=\"1027\"\u003eSpark knock \/ detonation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1091\" data-start=\"1054\"\u003e\n\u003cp data-end=\"1091\" data-start=\"1056\"\u003ePotential long-term engine damage\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"1135\" data-start=\"1093\"\u003e\u003cstrong data-end=\"1135\" data-start=\"1096\"\u003e6. Surging or Jerking While Driving\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-end=\"1202\" data-start=\"1136\"\u003eIntermittent opening and closing of a failing EGR valve can cause:\u003c\/p\u003e\n\u003cul data-end=\"1259\" data-start=\"1203\"\u003e\n\u003cli data-end=\"1231\" data-start=\"1203\"\u003e\n\u003cp data-end=\"1231\" data-start=\"1205\"\u003eSurging at steady speeds\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1259\" data-start=\"1232\"\u003e\n\u003cp data-end=\"1259\" data-start=\"1234\"\u003eJerky throttle response\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"1319\" data-start=\"1261\"\u003e\u003cstrong data-end=\"1319\" data-start=\"1264\"\u003e7. Excessive Exhaust Smoke (More Common on Diesels)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"1405\" data-start=\"1320\"\u003e\n\u003cli data-end=\"1350\" data-start=\"1320\"\u003e\n\u003cp data-end=\"1350\" data-start=\"1322\"\u003eBlack smoke = stuck closed\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1405\" data-start=\"1351\"\u003e\n\u003cp data-end=\"1405\" data-start=\"1353\"\u003eWhite\/grey smoke = stuck open or EGR cooler issues\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"1438\" data-start=\"1407\"\u003e\u003cstrong data-end=\"1438\" data-start=\"1410\"\u003e8. Failed Emissions Test\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-end=\"1497\" data-start=\"1439\"\u003eHigh NOx emissions usually indicate an EGR system problem.\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp data-end=\"476\" data-start=\"97\"\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-end=\"381\" data-start=\"0\"\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-end=\"628\" data-start=\"383\"\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":50537979543799,"sku":"5405857","price":825.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0895\/7080\/3959\/files\/photo_1_2026-04-01_01-56-59.jpg?v=1775093872","url":"https:\/\/forcetruckparts.com\/products\/5405857-genuine-cummins%c2%ae-exhaust-gas-recirculation-valve-6-7","provider":"Force Truck Parts","version":"1.0","type":"link"}