{"product_id":"4329479-genuine-cummins®-tube-connector-elbow-for-isf-qsf","title":"4329479 | Genuine Cummins® Tube Connector Elbow For ISF\/QSF","description":"\u003cp\u003e\u003cstrong\u003eDescription:\u003cbr\u003e\u003c\/strong\u003eA tube connector elbow\u003cstrong\u003e 4329479 \u003c\/strong\u003eis a small but important fitting used to join two tubes (or a tube and a port) at a 90-degree angle.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e: 4329479\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-end=\"176\" data-start=\"160\"\u003e\u003cbr\u003e\u003c\/strong\u003e\u003cstrong\u003eFits 4329479 \u003c\/strong\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003eFor \u003c\/span\u003eCummins ISF series, Cummins QSF series (like QSF 3.8)\u003cspan data-start=\"480\" data-end=\"517\"\u003e, \u003c\/span\u003emedium-duty diesel engines \u003c\/p\u003e\n\u003cul class=\"nav catalog\" id=\"catalogModels\"\u003e\u003c\/ul\u003e\n\u003cp data-end=\"353\" data-start=\"160\"\u003e\u003cstrong\u003ePurpose of using 4329479:\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 data-section-id=\"1idd62v\" data-start=\"219\" data-end=\"259\"\u003e\u003cspan role=\"text\"\u003e1. \u003cstrong data-start=\"226\" data-end=\"259\"\u003eRedirect flow in tight spaces\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"260\" data-end=\"346\"\u003eIn engines and machinery, there’s rarely room for straight runs. An elbow lets tubing:\u003c\/p\u003e\n\u003cul data-start=\"347\" data-end=\"453\"\u003e\n\u003cli data-section-id=\"100cas1\" data-start=\"347\" data-end=\"371\"\u003eTurn corners cleanly\u003c\/li\u003e\n\u003cli data-section-id=\"2pju5o\" data-start=\"372\" data-end=\"397\"\u003eFit around components\u003c\/li\u003e\n\u003cli data-section-id=\"m11hsm\" data-start=\"398\" data-end=\"453\"\u003eAvoid sharp bends that could kink or crack the line\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-section-id=\"1kshopz\" data-start=\"460\" data-end=\"495\"\u003e\u003cspan role=\"text\"\u003e2. \u003cstrong data-start=\"467\" data-end=\"495\"\u003ePrevent damage to tubing\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"496\" data-end=\"534\"\u003eTrying to bend a tube too sharply can:\u003c\/p\u003e\n\u003cul data-start=\"535\" data-end=\"604\"\u003e\n\u003cli data-section-id=\"1yont8m\" data-start=\"535\" data-end=\"552\"\u003eRestrict flow\u003c\/li\u003e\n\u003cli data-section-id=\"7mvf7t\" data-start=\"553\" data-end=\"576\"\u003eWeaken the material\u003c\/li\u003e\n\u003cli data-section-id=\"hdisev\" data-start=\"577\" data-end=\"604\"\u003eCause leaks or failures\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"606\" data-end=\"671\"\u003eAn elbow fitting keeps the bend \u003cstrong data-start=\"638\" data-end=\"670\"\u003esmooth and structurally safe\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp data-section-id=\"lxwcpm\" data-start=\"678\" data-end=\"709\"\u003e\u003cspan role=\"text\"\u003e3. \u003cstrong data-start=\"685\" data-end=\"709\"\u003eMaintain proper flow\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"710\" data-end=\"738\"\u003eA good elbow is designed to:\u003c\/p\u003e\n\u003cul data-start=\"739\" data-end=\"860\"\u003e\n\u003cli data-section-id=\"yut45y\" data-start=\"739\" data-end=\"765\"\u003eMinimize pressure loss\u003c\/li\u003e\n\u003cli data-section-id=\"1vbppki\" data-start=\"766\" data-end=\"804\"\u003eKeep air\/liquid moving efficiently\u003c\/li\u003e\n\u003cli data-section-id=\"1nhvuqh\" data-start=\"805\" data-end=\"860\"\u003eAvoid turbulence compared to a crushed or bent tube\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-section-id=\"105alh8\" data-start=\"867\" data-end=\"914\"\u003e\u003cspan role=\"text\"\u003e4. \u003cstrong data-start=\"874\" data-end=\"914\"\u003eCreate secure, leak-free connections\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"915\" data-end=\"981\"\u003eMany elbows (compression, push-to-connect, threaded) are built to:\u003c\/p\u003e\n\u003cul data-start=\"982\" data-end=\"1093\"\u003e\n\u003cli data-section-id=\"oj419c\" data-start=\"982\" data-end=\"998\"\u003eSeal tightly\u003c\/li\u003e\n\u003cli data-section-id=\"re7qvu\" data-start=\"999\" data-end=\"1058\"\u003eHandle pressure (air, fuel, hydraulic fluid, DEF, etc.)\u003c\/li\u003e\n\u003cli data-section-id=\"wzm6or\" data-start=\"1059\" data-end=\"1093\"\u003eBe easily installed or removed\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-section-id=\"1pmb7x4\" data-start=\"1100\" data-end=\"1133\"\u003e\u003cspan role=\"text\"\u003e5. \u003cstrong data-start=\"1107\" data-end=\"1133\"\u003eImprove serviceability\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"1134\" data-end=\"1178\"\u003eUsing fittings instead of bent tubing means:\u003c\/p\u003e\n\u003cul data-start=\"1179\" data-end=\"1252\"\u003e\n\u003cli data-section-id=\"rp7jsf\" data-start=\"1179\" data-end=\"1197\"\u003eEasier repairs\u003c\/li\u003e\n\u003cli data-section-id=\"1638oc2\" data-start=\"1198\" data-end=\"1221\"\u003eFaster replacements\u003c\/li\u003e\n\u003cli data-section-id=\"1377epy\" data-start=\"1222\" data-end=\"1252\"\u003eMore modular system design\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 data-end=\"597\" data-start=\"585\"\u003e\u003cbr\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSigns of a Bad Tube Connector Elbow 4329479:\u003cbr\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable width=\"100%\" style=\"width: 100.036%;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 100%;\"\u003e\n\u003cp data-section-id=\"195q4v9\" data-start=\"211\" data-end=\"247\"\u003e\u003cspan role=\"text\"\u003e1. \u003cstrong data-start=\"218\" data-end=\"247\"\u003eLeaks (most obvious sign)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul data-start=\"248\" data-end=\"392\"\u003e\n\u003cli data-section-id=\"zu52xd\" data-start=\"248\" data-end=\"293\"\u003eFluid, air, or residue around the fitting\u003c\/li\u003e\n\u003cli data-section-id=\"xxq3jq\" data-start=\"294\" data-end=\"339\"\u003eWet, oily, or crusty buildup at the elbow\u003c\/li\u003e\n\u003cli data-section-id=\"o2pumm\" data-start=\"340\" data-end=\"392\"\u003eIn air systems, you might \u003cstrong data-start=\"368\" data-end=\"392\"\u003ehear a hissing sound\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-section-id=\"n81j30\" data-start=\"435\" data-end=\"475\"\u003e\u003cspan role=\"text\"\u003e2. \u003cstrong data-start=\"442\" data-end=\"475\"\u003ePressure loss \/ system issues\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"476\" data-end=\"500\"\u003eDepending on the system:\u003c\/p\u003e\n\u003cul data-start=\"501\" data-end=\"658\"\u003e\n\u003cli data-section-id=\"fb0ck6\" data-start=\"501\" data-end=\"553\"\u003eAir brakes → slow air build or warning alarms\u003c\/li\u003e\n\u003cli data-section-id=\"2lw6hq\" data-start=\"554\" data-end=\"603\"\u003e Fuel system → rough running or hard starts\u003c\/li\u003e\n\u003cli data-section-id=\"3ooq8o\" data-start=\"604\" data-end=\"658\"\u003e HVAC → weak cooling or inconsistent performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-section-id=\"1oqi7zc\" data-start=\"714\" data-end=\"749\"\u003e\u003cspan role=\"text\"\u003e3. \u003cstrong data-start=\"721\" data-end=\"749\"\u003eVisible cracks or damage\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"750\" data-end=\"760\"\u003eCheck for:\u003c\/p\u003e\n\u003cul data-start=\"761\" data-end=\"885\"\u003e\n\u003cli data-section-id=\"17fwijx\" data-start=\"761\" data-end=\"817\"\u003eHairline cracks (especially in plastic\/nylon elbows)\u003c\/li\u003e\n\u003cli data-section-id=\"1lq3jv4\" data-start=\"818\" data-end=\"858\"\u003eCorrosion (common on metal fittings)\u003c\/li\u003e\n\u003cli data-section-id=\"qn2xtd\" data-start=\"859\" data-end=\"885\"\u003eDeformed or bent shape\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"887\" data-end=\"942\"\u003eEven a small crack can cause a big leak under pressure.\u003c\/p\u003e\n\u003cp data-section-id=\"pvmqfv\" data-start=\"949\" data-end=\"988\"\u003e\u003cspan role=\"text\"\u003e4. \u003cstrong data-start=\"956\" data-end=\"988\"\u003eLoose or slipping connection\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul data-start=\"989\" data-end=\"1115\"\u003e\n\u003cli data-section-id=\"19qi3l9\" data-start=\"989\" data-end=\"1022\"\u003eTube won’t stay firmly seated\u003c\/li\u003e\n\u003cli data-section-id=\"1jo87f7\" data-start=\"1023\" data-end=\"1063\"\u003ePush-to-connect fittings losing grip\u003c\/li\u003e\n\u003cli data-section-id=\"60a9qu\" data-start=\"1064\" data-end=\"1115\"\u003eThreads feel stripped or won’t tighten properly\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1117\" data-end=\"1156\"\u003eThis often leads to intermittent leaks.\u003c\/p\u003e\n\u003cp data-section-id=\"1s95s3r\" data-start=\"1163\" data-end=\"1200\"\u003e\u003cspan role=\"text\"\u003e5. \u003cstrong data-start=\"1170\" data-end=\"1200\"\u003eRestricted or blocked flow\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul data-start=\"1201\" data-end=\"1297\"\u003e\n\u003cli data-section-id=\"8se8iu\" data-start=\"1201\" data-end=\"1236\"\u003eDebris buildup inside the elbow\u003c\/li\u003e\n\u003cli data-section-id=\"t1b180\" data-start=\"1237\" data-end=\"1297\"\u003eCollapsed internal passage (from overtightening or damage)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1299\" data-end=\"1305\"\u003eSigns:\u003c\/p\u003e\n\u003cul data-start=\"1306\" data-end=\"1357\"\u003e\n\u003cli data-section-id=\"1jwzn90\" data-start=\"1306\" data-end=\"1329\"\u003eReduced performance\u003c\/li\u003e\n\u003cli data-section-id=\"1741gjl\" data-start=\"1330\" data-end=\"1357\"\u003eUneven pressure or flow\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-section-id=\"4ga2pi\" data-start=\"1364\" data-end=\"1389\"\u003e\u003cspan role=\"text\"\u003e6. \u003cstrong data-start=\"1371\" data-end=\"1389\"\u003eUnusual noises\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul data-start=\"1390\" data-end=\"1447\"\u003e\n\u003cli data-section-id=\"1lt0vf5\" data-start=\"1390\" data-end=\"1412\"\u003eHissing (air leak)\u003c\/li\u003e\n\u003cli data-section-id=\"12td4ch\" data-start=\"1413\" data-end=\"1447\"\u003eWhistling (restricted airflow)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1449\" data-end=\"1481\"\u003eCommon in air or vacuum systems.\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\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":50721547878647,"sku":"4329479","price":549.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0895\/7080\/3959\/files\/s-l400_3_ff635819-249a-4959-bb10-943eaa7ee4e4.jpg?v=1777414764","url":"https:\/\/forcetruckparts.com\/products\/4329479-genuine-cummins%c2%ae-tube-connector-elbow-for-isf-qsf","provider":"Force Truck Parts","version":"1.0","type":"link"}