{"product_id":"boom-cylinder-seal-kit-707-99-67120-komatsu-pc400-5-pc450-6","title":"boom-cylinder-seal-kit-707-99-67120-komatsu-pc400-pc450-excavator","description":"\u003ch1 data-section-id=\"xm4euj\" data-start=\"1389\" data-end=\"1414\" class=\"PDq2pG_selectionAnchorContainer\"\u003e\n\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"1391\" data-end=\"1414\"\u003eProduct Description\u003c\/strong\u003e\u003c\/span\u003e\u003cspan aria-hidden=\"true\" class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h1\u003e\n\u003cp data-start=\"1416\" data-end=\"1453\"\u003e\u003cstrong data-start=\"1416\" data-end=\"1430\"\u003ePart Name:\u003c\/strong\u003e Boom Cylinder Seal Kit\u003c\/p\u003e\n\u003cp data-start=\"1455\" data-end=\"1487\"\u003e\u003cstrong data-start=\"1455\" data-end=\"1474\"\u003ePart Number(s):\u003c\/strong\u003e 707-99-67120\u003c\/p\u003e\n\u003cp data-start=\"1489\" data-end=\"1521\"\u003e\u003cstrong data-start=\"1489\" data-end=\"1513\"\u003eBrand Compatibility:\u003c\/strong\u003e Komatsu\u003c\/p\u003e\n\u003cp data-start=\"1523\" data-end=\"1560\"\u003e\u003cstrong data-start=\"1523\" data-end=\"1540\"\u003eMachine Type:\u003c\/strong\u003e Hydraulic Excavator\u003c\/p\u003e\n\u003cp data-start=\"1562\" data-end=\"1600\"\u003e\u003cstrong data-start=\"1562\" data-end=\"1576\"\u003eComponent:\u003c\/strong\u003e Boom Hydraulic Cylinder\u003c\/p\u003e\n\u003cp data-start=\"1602\" data-end=\"1626\"\u003e\u003cstrong data-start=\"1602\" data-end=\"1616\"\u003eCondition:\u003c\/strong\u003e Brand New\u003c\/p\u003e\n\u003cp data-start=\"1628\" data-end=\"1770\"\u003e\u003cstrong data-start=\"1628\" data-end=\"1641\"\u003eShipping:\u003c\/strong\u003e Fast worldwide shipping with secure packaging, reliable international logistics and estimated delivery within 2–7 business days.\u003c\/p\u003e\n\u003cp data-start=\"1772\" data-end=\"2432\"\u003eThe \u003cstrong data-start=\"1776\" data-end=\"1815\"\u003e707-99-67120 Boom Cylinder Seal Kit\u003c\/strong\u003e is manufactured to OEM specifications for the \u003cstrong data-start=\"1862\" data-end=\"1889\"\u003eboom hydraulic cylinder\u003c\/strong\u003e fitted to selected \u003cstrong data-start=\"1909\" data-end=\"1973\"\u003eKomatsu PC400-5, PC400LC-5, PC450-6 and PC450LC-6 excavators\u003c\/strong\u003e. Designed for hydraulic cylinders with a \u003cstrong data-start=\"2015\" data-end=\"2052\"\u003e110 mm piston rod and 160 mm bore\u003c\/strong\u003e, this complete overhaul kit contains the seals, wear rings, backup rings, guide rings and O-rings required to restore hydraulic sealing, maintain operating pressure and eliminate internal and external oil leakage. It is engineered to withstand the high hydraulic pressures and heavy-duty operating conditions encountered in large excavators. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"2434\" data-end=\"2974\"\u003eThe boom cylinder is responsible for raising and lowering the excavator's main boom, supporting heavy lifting, deep excavation, rock handling and loading operations. Continuous exposure to shock loads, high system pressures and contaminated hydraulic oil gradually wears the sealing elements, resulting in hydraulic leakage, boom drift and reduced lifting performance. Replacing the complete seal kit restores cylinder efficiency, protects internal cylinder components and helps maximise machine productivity while reducing costly downtime.\u003c\/p\u003e\n\u003cp data-start=\"2976\" data-end=\"3000\"\u003e\u003cstrong data-start=\"2976\" data-end=\"3000\"\u003eTypical Applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"3002\" data-end=\"3144\"\u003eConstruction • Earthmoving • Mining • Quarrying • Civil Infrastructure • Road Construction • Demolition • Heavy Excavation • Material Handling\u003c\/p\u003e\n\u003cp data-start=\"3146\" data-end=\"3165\"\u003e\u003cstrong data-start=\"3146\" data-end=\"3165\"\u003eCommon Symptoms\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"3167\" data-end=\"3412\"\u003e\n\u003cli data-section-id=\"1akv3w5\" data-start=\"3167\" data-end=\"3213\"\u003eHydraulic oil leakage from the boom cylinder\u003c\/li\u003e\n\u003cli data-section-id=\"1t0sxul\" data-start=\"3214\" data-end=\"3242\"\u003eBoom drifting while raised\u003c\/li\u003e\n\u003cli data-section-id=\"6k1lq8\" data-start=\"3243\" data-end=\"3274\"\u003eReduced boom lifting capacity\u003c\/li\u003e\n\u003cli data-section-id=\"r7g28n\" data-start=\"3275\" data-end=\"3306\"\u003eSlow boom raising or lowering\u003c\/li\u003e\n\u003cli data-section-id=\"5jk99x\" data-start=\"3307\" data-end=\"3343\"\u003eInternal hydraulic pressure bypass\u003c\/li\u003e\n\u003cli data-section-id=\"nxggrm\" data-start=\"3344\" data-end=\"3378\"\u003eDifficulty holding boom position\u003c\/li\u003e\n\u003cli data-section-id=\"dm78ko\" data-start=\"3379\" data-end=\"3412\"\u003eReduced excavation productivity\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"3414\" data-end=\"3446\"\u003e\u003cstrong data-start=\"3414\" data-end=\"3446\"\u003eCross-Reference Part Numbers\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"3448\" data-end=\"3481\"\u003e\u003cstrong data-start=\"3448\" data-end=\"3468\"\u003eOEM Part Number:\u003c\/strong\u003e 707-99-67120\u003cstrong data-start=\"3483\" data-end=\"3516\"\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"3578\" data-end=\"3599\"\u003e\u003cstrong data-start=\"3578\" data-end=\"3599\"\u003eCompatible Models\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"3601\" data-end=\"3677\"\u003e\u003cstrong data-start=\"3601\" data-end=\"3626\"\u003eHydraulic Excavators:\u003c\/strong\u003e Komatsu PC400-5, PC400LC-5, PC450-6 and PC450LC-6.\u003c\/p\u003e\n\u003cp data-start=\"3679\" data-end=\"3695\"\u003e\u003cstrong data-start=\"3679\" data-end=\"3695\"\u003eFitment Note\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"3697\" data-end=\"4046\"\u003ePlease verify the OEM part number, machine model, serial number and \u003cstrong data-start=\"3765\" data-end=\"3801\"\u003eboom hydraulic cylinder assembly\u003c\/strong\u003e before ordering. Komatsu may use different boom cylinder configurations depending on the machine serial number, production series and regional specification. Contact Imara Engineering Supplies if you require assistance confirming compatibility.\u003c\/p\u003e","brand":"Imara Engineering Supplies","offers":[{"title":"Default Title","offer_id":45129190637768,"sku":"707-99-67120","price":205.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0600\/5348\/7816\/files\/Boom_Cylinder_Seal_Kit_707-99-67120_for_Komatsu_PC400-5_PC400LC-5_PC450-6_PC450LC-6_Excavator1X.jpg?v=1784555187","url":"https:\/\/imaraengineeringsupplies.com\/products\/boom-cylinder-seal-kit-707-99-67120-komatsu-pc400-5-pc450-6","provider":"Imara Engineering Supplies","version":"1.0","type":"link"}