{"product_id":"429-2647-genuine-cat®-def-diesel-exhaust-fluid-injector-kit","title":"429-2647 | Genuine Cat® DEF - Diesel Exhaust Fluid Injector Kit","description":"\u003cp\u003e\u003cstrong\u003eDescription:\u003cbr\u003e\u003c\/strong\u003eA Diesel Exhaust Fluid (DEF) Injector Kit\u003cstrong\u003e 429-2647\u003c\/strong\u003e is a component used in modern diesel vehicles to reduce harmful emissions. It’s part of the Selective Catalytic Reduction (SCR) system. Diesel Exhaust Fluid Injector Kit \u003cspan\u003eFor Caterpillar CAT Engine C4.4\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003e\u003cbr\u003ePart Number\u003c\/strong\u003e: 429-2647, 4292647\u003cbr\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003cspan\u003e: New\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003eManufacture\/Brand\u003c\/strong\u003e\u003cspan\u003e: Cat\u003cbr\u003e\u003c\/span\u003e\u003cstrong data-end=\"176\" data-start=\"160\"\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003cstrong\u003e\u003cbr\u003eFits 429-2647 \u003c\/strong\u003eFor\u003cstrong\u003e \u003cbr\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003eGenerator\u003c\/strong\u003e: LC31XX\n\u003cdiv\u003e\n\u003cp class=\"cat-u-margin-bottom-none cat-u-theme-typography-label-lg\"\u003e\u003cstrong\u003eGenerator Set:\u003c\/strong\u003e C4.4\u003cbr\u003e\u003cstrong\u003eBackhoe Loader: \u003c\/strong\u003e444F2 440 416F2 420F2 428F2 432F2 430F2 434F2\u003cbr\u003e\u003cstrong\u003eCompact Wheel Loader:\u003c\/strong\u003e 914M 918M 910M\u003cbr\u003e\u003cstrong\u003eTrack-Type Tractor: \u003c\/strong\u003eD3K2 LGP D4K2 LGP D5K2 XL D3K2 XL D4K2 XL D5K2 LGP\u003cbr\u003e\u003cstrong\u003eEngine - Machine: \u003c\/strong\u003eC4.4\u003cbr\u003e\u003cstrong\u003eKnuckleboom Loader: \u003c\/strong\u003e2384D 2484D 559D 579D\u003cbr\u003e\u003cstrong\u003eAsphalt Paver:\u003c\/strong\u003e AP655F AP600F\u003cbr\u003e\u003cstrong\u003eWheeled Excavator:\u003c\/strong\u003e M316F M314F\u003cbr\u003e\u003cstrong\u003ePneumatic Compactor: \u003c\/strong\u003eCW-34\u003cbr\u003e\u003cstrong\u003eIndustrial Engine:\u003c\/strong\u003e C4.4\u003cbr\u003e\u003cstrong\u003eExcavator: \u003c\/strong\u003e316F L 323F SA 312F 325F LCR 323F LN 323F 318F L 320 323F OEM 320F L 315F LCR 313F L 314F CR 313F 320 GC 325F\u003cbr\u003e\u003cstrong\u003eVibratory Compactor:\u003c\/strong\u003e CS-64B CS-76B CS-56B CS-68B CP-54B CP-74B CS-74B CS-54B CS-66B CS-78B CP-56B CP-68B\u003cbr\u003e\u003cstrong\u003eMobile HYD Power Unit: \u003c\/strong\u003e323F OEM\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cspan class=\"hover:entity-accent entity-underline inline cursor-pointer align-baseline\"\u003e\u003cspan class=\"whitespace-normal\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"hover:entity-accent entity-underline inline cursor-pointer align-baseline\"\u003e\u003cspan class=\"whitespace-normal\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"hover:entity-accent entity-underline inline cursor-pointer align-baseline\"\u003e\u003cspan class=\"whitespace-normal\"\u003e\u003cbr\u003e\u003cstrong\u003ePurpose of using 429-2647:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ctable width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp data-section-id=\"14tvwor\" data-start=\"100\" data-end=\"130\"\u003e\u003cstrong\u003e1. Inject DEF into exhaust\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"131\" data-end=\"216\"\u003eThe injector sprays a fine mist of DEF into the hot exhaust gases leaving the engine.\u003c\/p\u003e\n\u003cp data-section-id=\"piy9fi\" data-start=\"218\" data-end=\"249\"\u003e\u003cstrong\u003e2. Convert DEF into ammonia\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"250\" data-end=\"324\"\u003eHeat in the exhaust breaks the DEF (urea + water) down into ammonia (NH₃).\u003c\/p\u003e\n\u003cp data-section-id=\"1sdnh76\" data-start=\"326\" data-end=\"357\"\u003e\u003cstrong\u003e3. Neutralize harmful gases\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"358\" data-end=\"457\"\u003eThe ammonia reacts with nitrogen oxides (NOx)—harmful pollutants produced during diesel combustion.\u003c\/p\u003e\n\u003cp data-section-id=\"1rw8psw\" data-start=\"459\" data-end=\"501\"\u003e\u003cstrong\u003e4. Turn pollutants into safe emissions\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"502\" data-end=\"585\"\u003eThrough the \u003cstrong data-start=\"514\" data-end=\"553\"\u003eSelective Catalytic Reduction (SCR)\u003c\/strong\u003e process, NOx is converted into:\u003c\/p\u003e\n\u003cul data-start=\"586\" data-end=\"621\"\u003e\n\u003cli data-section-id=\"axy2hz\" data-start=\"586\" data-end=\"601\"\u003eNitrogen (N₂)\u003c\/li\u003e\n\u003cli data-section-id=\"yj41wj\" data-start=\"602\" data-end=\"621\"\u003eWater vapor (H₂O)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-section-id=\"1r60uza\" data-start=\"623\" data-end=\"654\"\u003e\u003cstrong\u003e5. Meet emissions standards\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"655\" data-end=\"768\"\u003eThis process helps vehicles comply with regulations from agencies like the \u003cspan class=\"hover:entity-accent entity-underline inline cursor-pointer align-baseline\"\u003e\u003cspan class=\"whitespace-normal\"\u003eEnvironmental Protection Agency\u003c\/span\u003e\u003c\/span\u003e.\u003c\/p\u003e\n\u003cp data-section-id=\"h4unrj\" data-start=\"770\" data-end=\"809\"\u003e\u003cstrong\u003e6. Maintain normal engine operation\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"810\" data-end=\"841\"\u003eWithout a working DEF injector:\u003c\/p\u003e\n\u003cul data-start=\"842\" data-end=\"951\"\u003e\n\u003cli data-section-id=\"12gkv73\" data-start=\"842\" data-end=\"877\"\u003eThe system can’t reduce emissions\u003c\/li\u003e\n\u003cli data-section-id=\"1d4nxur\" data-start=\"878\" data-end=\"918\"\u003eThe vehicle may trigger warning lights\u003c\/li\u003e\n\u003cli data-section-id=\"1ys3b1s\" data-start=\"919\" data-end=\"951\"\u003eIt may limit power (limp mode)\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-end=\"353\" data-start=\"160\"\u003e\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\u003cstrong data-end=\"597\" data-start=\"585\"\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSigns of Bad Diesel Exhaust Fluid Injector Kit 429-2647:\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=\"141\" data-start=\"111\" data-section-id=\"1gmmfy4\"\u003e\u003cstrong\u003e1. Warning messages appear\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"288\" data-start=\"142\"\u003e\n\u003cli data-end=\"166\" data-start=\"142\" data-section-id=\"ae1gan\"\u003e“Check Engine” light\u003c\/li\u003e\n\u003cli data-end=\"288\" data-start=\"167\" data-section-id=\"1hhn0mb\"\u003e“DEF System Fault” or “Exhaust Fluid System” warning\u003cbr data-end=\"224\" data-start=\"221\"\u003eThese are usually the first signs something isn’t working right.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"336\" data-start=\"290\" data-section-id=\"12k4adc\"\u003e\u003cstrong\u003e2. Increased DEF consumption (or no usage)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"454\" data-start=\"337\"\u003e\n\u003cli data-end=\"404\" data-start=\"337\" data-section-id=\"tikm2p\"\u003eThe system may use \u003cstrong data-end=\"374\" data-start=\"358\"\u003etoo much DEF\u003c\/strong\u003e (leaking or over-injecting)\u003c\/li\u003e\n\u003cli data-end=\"454\" data-start=\"405\" data-section-id=\"luygvr\"\u003eOr \u003cstrong data-end=\"425\" data-start=\"410\"\u003enone at all\u003c\/strong\u003e (clogged or failed injector)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"489\" data-start=\"456\" data-section-id=\"1jqo8u3\"\u003e\u003cstrong\u003e3. Poor emissions performance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"612\" data-start=\"490\"\u003e\n\u003cli data-end=\"528\" data-start=\"490\" data-section-id=\"mux3or\"\u003eHigher nitrogen oxide (NOx) output\u003c\/li\u003e\n\u003cli data-end=\"612\" data-start=\"529\" data-section-id=\"s8vv26\"\u003eMay fail an emissions test regulated by the \u003cspan class=\"hover:entity-accent entity-underline inline cursor-pointer align-baseline\"\u003e\u003cspan class=\"whitespace-normal\"\u003eEnvironmental Protection Agency\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"656\" data-start=\"614\" data-section-id=\"1orqfzm\"\u003e\u003cstrong\u003e4. Rough running or reduced efficiency\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"779\" data-start=\"657\"\u003e\n\u003cli data-end=\"700\" data-start=\"657\" data-section-id=\"1697typ\"\u003eEngine may feel slightly less efficient\u003c\/li\u003e\n\u003cli data-end=\"779\" data-start=\"701\" data-section-id=\"pt3x0x\"\u003eFuel economy can drop because the system isn’t optimizing emissions properly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"824\" data-start=\"781\" data-section-id=\"20z3p7\"\u003e\u003cstrong\u003e5. White crystal buildup (visible clue)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"961\" data-start=\"825\"\u003e\n\u003cli data-end=\"916\" data-start=\"825\" data-section-id=\"145merr\"\u003eDried DEF can leave \u003cstrong data-end=\"872\" data-start=\"847\"\u003ewhite crusty deposits\u003c\/strong\u003e around the injector or exhaust components\u003c\/li\u003e\n\u003cli data-end=\"961\" data-start=\"917\" data-section-id=\"v7nsz9\"\u003eThis often means leaking or improper spray\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"1003\" data-start=\"963\" data-section-id=\"19sk3ou\"\u003e\u003cstrong\u003e6. Strong ammonia smell from exhaust\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"1077\" data-start=\"1004\"\u003e\n\u003cli data-end=\"1077\" data-start=\"1004\" data-section-id=\"kbqf2n\"\u003eIndicates DEF isn’t being properly atomized or burned in the SCR system\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"1121\" data-start=\"1079\" data-section-id=\"u7kbg\"\u003e\u003cstrong\u003e7. Engine power limitation (limp mode)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"1210\" data-start=\"1122\"\u003e\n\u003cli data-end=\"1178\" data-start=\"1122\" data-section-id=\"17i1ogh\"\u003eThe vehicle may reduce speed\/power to force a repair\u003c\/li\u003e\n\u003cli data-end=\"1210\" data-start=\"1179\" data-section-id=\"1mx7jtf\"\u003eCommon in newer diesel trucks\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"1252\" data-start=\"1212\" data-section-id=\"1tphm4b\"\u003e\u003cstrong\u003e8. No-start condition (severe cases)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"1348\" data-start=\"1253\"\u003e\n\u003cli data-end=\"1348\" data-start=\"1253\" data-section-id=\"9wx6u\"\u003eSome vehicles won’t restart if the DEF\/SCR system failure isn’t fixed after repeated warnings\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-end=\"476\" data-start=\"97\"\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003eAbout the Manufacturer – Cat:\u003cbr\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003eCaterpillar (CAT)\u003c\/span\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003e is a world-leading American manufacturer known for its heavy machinery, engines, and industrial equipment. Founded in 1925, the brand is recognized for durable construction machines like excavators, bulldozers, loaders, and generators. Caterpillar products are widely used in construction, mining, agriculture, and power systems, and the company is known for its reliability, innovation, and strong global support network.\u003c\/span\u003e\u003c\/p\u003e","brand":"Cat","offers":[{"title":"Default Title","offer_id":50621557637367,"sku":"429-2647","price":1149.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0895\/7080\/3959\/files\/photo_2026-03-25_19-31-44.jpg?v=1774460272","url":"https:\/\/forcetruckparts.com\/products\/429-2647-genuine-cat%c2%ae-def-diesel-exhaust-fluid-injector-kit","provider":"Force Truck Parts","version":"1.0","type":"link"}