{"product_id":"a056a968-genuine-cummins®-inlet-catalyst-module","title":"A056A968 | Genuine Cummins® Inlet Catalyst Module","description":"\u003cp\u003e\u003cstrong\u003eDescription:\u003cbr\u003e\u003c\/strong\u003eAn Inlet Catalyst Module \u003cstrong\u003eA056A968 \u003c\/strong\u003e(often called an Inlet DOC module) is a key part of a modern diesel engine’s exhaust aftertreatment system - the system that reduces harmful emissions before exhaust gases exit the tailpipe.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e: A056A968\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\u003cspan\u003e\u003c\/span\u003e\u003cstrong data-end=\"176\" data-start=\"160\"\u003e\u003cbr\u003e\u003c\/strong\u003e\u003cstrong\u003eFits A056A968 \u003c\/strong\u003eFor Cummins engine systems \u003cspan\u003eEPA17 6.7 liter ISB\/QSB\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-end=\"353\" data-start=\"160\"\u003e\u003cstrong data-end=\"597\" data-start=\"585\"\u003ePurpose of using A056A968\u003c\/strong\u003e\u003cstrong data-end=\"597\" data-start=\"585\"\u003e:\u003cbr\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003e1. Reduce Harmful Emissions\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Inlet Catalyst Module contains precious metals (like platinum and palladium) that trigger chemical reactions:\u003cbr\u003eCO (Carbon Monoxide) → converted into CO₂\u003cbr\u003eHC (Hydrocarbons) → converted into CO₂ + H₂O\u003cbr\u003eNO (Nitric Oxide) → partially converted into NO₂\u003cbr\u003eThese reactions make the exhaust cleaner before it enters the DPF or SCR system.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e2. Support DPF Regeneration\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe module helps increase exhaust gas temperature, which is crucial for burning off soot in the DPF.\u003cbr\u003eWithout a functioning Inlet Catalyst Module:\u003cbr\u003eThe DPF may clog faster\u003cbr\u003eRegeneration cycles may fail or occur too often\u003cbr\u003eThe truck may enter limp mode\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e3. Protect Downstream Components\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eBy oxidizing unburned fuel and stabilizing exhaust temperature:\u003cbr\u003eIt prevents fuel and soot buildup in the DPF.\u003cbr\u003eIt reduces stress on the SCR system and sensors.\u003cbr\u003eIt ensures the entire emissions system works efficiently.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003e4. Maintain Compliance and Performance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eRequired for meeting EPA and Euro emissions standards (such as EPA17+ for Cummins engines).\u003cbr\u003eKeeps the engine in compliance with environmental regulations.\u003cbr\u003eHelps maintain fuel efficiency and power output by keeping backpressure and exhaust flow stable.\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp data-end=\"353\" data-start=\"160\"\u003e\u003cstrong data-end=\"597\" data-start=\"585\"\u003e\u003cbr\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSigns of a Bad Inlet Catalyst Module A056A968:\u003cbr\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cstrong\u003e1. Check Engine Light or Fault Codes\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe ECM (Engine Control Module) will detect problems such as:\u003cbr\u003eLow catalyst efficiency\u003cbr\u003eTemperature sensor faults\u003cbr\u003ePoor NOx or HC conversion\u003cbr\u003eCommon fault codes:\u003cbr\u003eCummins 3582, 1922, 2372, 2639, 3251 (related to DOC efficiency or temperature)\u003cbr\u003eYou’ll often see the Check Engine Light or Aftertreatment System Warning on the dashboard.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e2. Excessive Soot or Smoke\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIf the catalyst isn’t oxidizing hydrocarbons properly:\u003cbr\u003eYou may see dark or black exhaust smoke.\u003cbr\u003eSoot accumulates faster in the Diesel Particulate Filter (DPF).\u003cbr\u003eThis can cause frequent or failed DPF regenerations.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e3. Poor DPF Regeneration or Frequent Regen Cycles\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Inlet Catalyst (DOC) helps heat the exhaust gases during DPF regeneration.\u003cbr\u003eA bad DOC can’t maintain the temperature needed (~500–600 °C), causing:\u003cbr\u003eIncomplete or failed regens\u003cbr\u003eIncreased soot load\u003cbr\u003e“DPF Full” or “Regen Required” warnings\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e4. Reduced Engine Power or Limp Mode\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe ECM may reduce engine power to protect the emissions system.\u003cbr\u003eYou’ll feel loss of acceleration, limited RPM, or the truck may enter limp mode.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e5. Overheating or Unusual Exhaust Temperatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA clogged or failing catalyst can restrict exhaust flow, causing:\u003cbr\u003eHigh exhaust back pressure\u003cbr\u003eTurbocharger overheating\u003cbr\u003eMelted or damaged sensors\u003cbr\u003eIn severe cases, the module can glow red-hot or cause thermal damage to nearby components.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e6. Strong Odors or Excessive Heat Near the Exhaust\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA sulfur or burning smell may appear if the catalyst coating is damaged.\u003cbr\u003eYou might also notice excess heat near the DOC housing due to restricted flow.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e7. Poor Fuel Economy\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eBecause the system can’t efficiently process exhaust gases, the ECM compensates by injecting more fuel to maintain temperature or regeneration cycles.\u003cbr\u003eThis leads to higher fuel consumption over time.\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":50503421001975,"sku":"A056A968","price":1949.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0895\/7080\/3959\/files\/photo_2025-10-22_10-44-19.jpg?v=1761325686","url":"https:\/\/forcetruckparts.com\/products\/a056a968-genuine-cummins%c2%ae-inlet-catalyst-module","provider":"Force Truck Parts","version":"1.0","type":"link"}