{"product_id":"ap55100-genuine-cummins®-fuel-injector-for-xpi-fuel-systems-15l-isx-qsx","title":"AP55100 | Genuine Cummins® Fuel Injector For XPI Fuel Systems 15L ISX\/QSX","description":"\u003cp\u003e\u003cstrong\u003eDescription:\u003cbr\u003e\u003c\/strong\u003eA fuel injector \u003cstrong\u003eAP55100 \u003c\/strong\u003eis a crucial component in an internal combustion engine that delivers fuel into the engine’s combustion chamber or intake manifold in a precise, controlled manner. Its job is to ensure the engine gets the right amount of fuel at the right time for efficient combustion.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e: AP55100\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-start=\"160\" data-end=\"176\"\u003e\u003cbr\u003e\u003c\/strong\u003e\u003cstrong\u003eFits AP55100 \u003c\/strong\u003eFor Cummins Engine XPI Fuel Systems EPA13 15L ISX\/QSX\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 AP55100:\u003c\/strong\u003e\u003cstrong data-start=\"585\" data-end=\"597\"\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 data-start=\"293\" data-end=\"327\"\u003e\u003cstrong data-start=\"297\" data-end=\"327\"\u003e1. Deliver Fuel Accurately\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"328\" data-end=\"503\"\u003e\n\u003cli data-start=\"328\" data-end=\"414\"\u003e\n\u003cp data-start=\"330\" data-end=\"414\"\u003eSupplies the \u003cstrong data-start=\"343\" data-end=\"367\"\u003eexact amount of fuel\u003c\/strong\u003e the engine needs for current speed and load.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"415\" data-end=\"503\"\u003e\n\u003cp data-start=\"417\" data-end=\"503\"\u003eHelps maintain \u003cstrong data-start=\"432\" data-end=\"458\"\u003eoptimal air-fuel ratio\u003c\/strong\u003e, usually around 14.7:1 for gasoline engines.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"510\" data-end=\"537\"\u003e\u003cstrong data-start=\"514\" data-end=\"537\"\u003e2. Atomize the Fuel\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"538\" data-end=\"748\"\u003e\n\u003cli data-start=\"538\" data-end=\"587\"\u003e\n\u003cp data-start=\"540\" data-end=\"587\"\u003eSprays fuel as a \u003cstrong data-start=\"557\" data-end=\"570\"\u003efine mist\u003c\/strong\u003e, not a stream.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"588\" data-end=\"748\"\u003e\n\u003cp data-start=\"590\" data-end=\"663\"\u003eFine mist mixes better with air, allowing \u003cstrong data-start=\"632\" data-end=\"655\"\u003ecomplete combustion\u003c\/strong\u003e, which:\u003c\/p\u003e\n\u003cul data-start=\"666\" data-end=\"748\"\u003e\n\u003cli data-start=\"666\" data-end=\"689\"\u003e\n\u003cp data-start=\"668\" data-end=\"689\"\u003eProduces more power\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"692\" data-end=\"717\"\u003e\n\u003cp data-start=\"694\" data-end=\"717\"\u003eReduces unburned fuel\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"720\" data-end=\"748\"\u003e\n\u003cp data-start=\"722\" data-end=\"748\"\u003eImproves fuel efficiency\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"755\" data-end=\"780\"\u003e\u003cstrong data-start=\"759\" data-end=\"780\"\u003e3. Control Timing\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"781\" data-end=\"946\"\u003e\n\u003cli data-start=\"781\" data-end=\"871\"\u003e\n\u003cp data-start=\"783\" data-end=\"871\"\u003eOpens and closes in precise intervals controlled by the \u003cstrong data-start=\"839\" data-end=\"868\"\u003eengine control unit (ECU)\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"872\" data-end=\"946\"\u003e\n\u003cp data-start=\"874\" data-end=\"946\"\u003eEnsures fuel enters \u003cstrong data-start=\"894\" data-end=\"943\"\u003eexactly when the cylinder is ready to burn it\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"953\" data-end=\"989\"\u003e\u003cstrong data-start=\"957\" data-end=\"989\"\u003e4. Improve Engine Efficiency\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"990\" data-end=\"1092\"\u003e\n\u003cli data-start=\"990\" data-end=\"1092\"\u003e\n\u003cp data-start=\"992\" data-end=\"1019\"\u003eProper fuel delivery means:\u003c\/p\u003e\n\u003cul data-start=\"1022\" data-end=\"1092\"\u003e\n\u003cli data-start=\"1022\" data-end=\"1045\"\u003e\n\u003cp data-start=\"1024\" data-end=\"1045\"\u003eBetter acceleration\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1048\" data-end=\"1063\"\u003e\n\u003cp data-start=\"1050\" data-end=\"1063\"\u003eSmooth idle\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1066\" data-end=\"1092\"\u003e\n\u003cp data-start=\"1068\" data-end=\"1092\"\u003eLower fuel consumption\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1099\" data-end=\"1126\"\u003e\u003cstrong data-start=\"1103\" data-end=\"1126\"\u003e5. Reduce Emissions\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1127\" data-end=\"1235\"\u003e\n\u003cli data-start=\"1127\" data-end=\"1235\"\u003e\n\u003cp data-start=\"1129\" data-end=\"1156\"\u003eComplete combustion lowers:\u003c\/p\u003e\n\u003cul data-start=\"1159\" data-end=\"1235\"\u003e\n\u003cli data-start=\"1159\" data-end=\"1183\"\u003e\n\u003cp data-start=\"1161\" data-end=\"1183\"\u003eCarbon monoxide (CO)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1186\" data-end=\"1207\"\u003e\n\u003cp data-start=\"1188\" data-end=\"1207\"\u003eHydrocarbons (HC)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1210\" data-end=\"1235\"\u003e\n\u003cp data-start=\"1212\" data-end=\"1235\"\u003eNitrogen oxides (NOx)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1242\" data-end=\"1286\"\u003e\u003cstrong data-start=\"1246\" data-end=\"1286\"\u003e6. Enable Modern Engine Technologies\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1287\" data-end=\"1426\"\u003e\n\u003cli data-start=\"1287\" data-end=\"1426\"\u003e\n\u003cp data-start=\"1289\" data-end=\"1426\"\u003eDirect injection engines, turbocharging, and variable valve timing all rely on \u003cstrong data-start=\"1368\" data-end=\"1394\"\u003eprecise fuel injection\u003c\/strong\u003e for performance and efficiency.\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 data-start=\"585\" data-end=\"597\"\u003e\u003cbr\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSigns of a Bad Fuel Injector AP55100:\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=\"231\" data-start=\"203\"\u003e\u003cstrong data-end=\"231\" data-start=\"209\"\u003e1. Engine Misfires\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"349\" data-start=\"232\"\u003e\n\u003cli data-end=\"300\" data-start=\"232\"\u003e\n\u003cp data-end=\"300\" data-start=\"234\"\u003eCylinder misfires when the injector isn’t supplying enough fuel.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"349\" data-start=\"301\"\u003e\n\u003cp data-end=\"349\" data-start=\"303\"\u003eRough running at idle or under acceleration.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"386\" data-start=\"356\"\u003e\u003cstrong data-end=\"386\" data-start=\"362\"\u003e2. Poor Fuel Economy\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"527\" data-start=\"387\"\u003e\n\u003cli data-end=\"480\" data-start=\"387\"\u003e\n\u003cp data-end=\"480\" data-start=\"389\"\u003eIf the injector leaks or sprays too much fuel, the engine burns more fuel than necessary.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"527\" data-start=\"481\"\u003e\n\u003cp data-end=\"527\" data-start=\"483\"\u003eNoticeable drop in miles per gallon (MPG).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"557\" data-start=\"534\"\u003e\u003cstrong data-end=\"557\" data-start=\"540\"\u003e3. Rough Idle\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"658\" data-start=\"558\"\u003e\n\u003cli data-end=\"604\" data-start=\"558\"\u003e\n\u003cp data-end=\"604\" data-start=\"560\"\u003eEngine shakes or vibrates when stationary.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"658\" data-start=\"605\"\u003e\n\u003cp data-end=\"658\" data-start=\"607\"\u003eCaused by uneven fuel delivery between cylinders.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"691\" data-start=\"665\"\u003e\u003cstrong data-end=\"691\" data-start=\"671\"\u003e4. Hard Starting\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"815\" data-start=\"692\"\u003e\n\u003cli data-end=\"733\" data-start=\"692\"\u003e\n\u003cp data-end=\"733\" data-start=\"694\"\u003eEngine cranks but struggles to start.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"815\" data-start=\"734\"\u003e\n\u003cp data-end=\"815\" data-start=\"736\"\u003eOften happens when injectors are clogged or not delivering fuel consistently.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"859\" data-start=\"822\"\u003e\u003cstrong data-end=\"859\" data-start=\"828\"\u003e5. Check Engine Light (CEL)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"1007\" data-start=\"860\"\u003e\n\u003cli data-end=\"965\" data-start=\"860\"\u003e\n\u003cp data-end=\"878\" data-start=\"862\"\u003eCodes such as:\u003c\/p\u003e\n\u003cul data-end=\"965\" data-start=\"881\"\u003e\n\u003cli data-end=\"922\" data-start=\"881\"\u003e\n\u003cp data-end=\"922\" data-start=\"883\"\u003eP0200–P0206 (Injector circuit issues)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"965\" data-start=\"925\"\u003e\n\u003cp data-end=\"965\" data-start=\"927\"\u003eP0300–P0306 (Cylinder misfire codes)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1007\" data-start=\"966\"\u003e\n\u003cp data-end=\"1007\" data-start=\"968\"\u003eCEL may blink if misfires are severe.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"1036\" data-start=\"1014\"\u003e\u003cstrong data-end=\"1036\" data-start=\"1020\"\u003e6. Fuel Odor\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"1113\" data-start=\"1037\"\u003e\n\u003cli data-end=\"1113\" data-start=\"1037\"\u003e\n\u003cp data-end=\"1113\" data-start=\"1039\"\u003eLeaking injectors can cause \u003cstrong data-end=\"1088\" data-start=\"1067\"\u003estrong fuel smell\u003c\/strong\u003e around the engine bay.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"1157\" data-start=\"1120\"\u003e7\u003cstrong data-end=\"1157\" data-start=\"1126\"\u003e. Black Smoke from Exhaust\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"1255\" data-start=\"1158\"\u003e\n\u003cli data-end=\"1255\" data-start=\"1158\"\u003e\n\u003cp data-end=\"1255\" data-start=\"1160\"\u003eToo much fuel entering the combustion chamber produces \u003cstrong data-end=\"1231\" data-start=\"1215\"\u003erich mixture\u003c\/strong\u003e, causing black smoke.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"1310\" data-start=\"1262\"\u003e\u003cstrong data-end=\"1310\" data-start=\"1268\"\u003e8. Engine Knocking or Poor Performance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"1442\" data-start=\"1311\"\u003e\n\u003cli data-end=\"1442\" data-start=\"1311\"\u003e\n\u003cp data-end=\"1442\" data-start=\"1313\"\u003eIncorrect fuel spray pattern leads to \u003cstrong data-end=\"1376\" data-start=\"1351\"\u003eincomplete combustion\u003c\/strong\u003e, which may cause knocking, hesitation, or lack of acceleration.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"1486\" data-start=\"1449\"\u003e\u003cstrong data-end=\"1486\" data-start=\"1455\"\u003e9. Contaminated Spark Plugs\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"1586\" data-start=\"1487\"\u003e\n\u003cli data-end=\"1586\" data-start=\"1487\"\u003e\n\u003cp data-end=\"1586\" data-start=\"1489\"\u003eSpark plugs may show \u003cstrong data-end=\"1526\" data-start=\"1510\"\u003esoot buildup\u003c\/strong\u003e or wet fuel deposits if injectors are leaking or clogged.\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":50466104377591,"sku":"AP55100","price":845.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0895\/7080\/3959\/files\/5579419-oem-cummins-fuel-injector-for-xpi-fuel-systems-on-epa13-15l-isxqsx-engines-advanced-truck-parts-67202_2048x_6e71575c-1a57-4737-b7fc-5160608f0690.webp?v=1769792307","url":"https:\/\/forcetruckparts.com\/products\/ap55100-genuine-cummins%c2%ae-fuel-injector-for-xpi-fuel-systems-15l-isx-qsx","provider":"Force Truck Parts","version":"1.0","type":"link"}