{"product_id":"cat-3278163-327-8163-hydraulic-rotating-gp-pump","title":"CAT 3278163 (327-8163) Rotating GP-Pump | Fits 416E 428E 621K 988K C15","description":"\u003cp\u003ePremium hydraulic rotating group and pump component designed as a direct OEM-compatible replacement for Caterpillar (CAT) heavy machinery and diesel engines, ensuring precision power transfer and fluid displacement. Built to deliver optimal volumetric efficiency, smooth rotation, and reliable service life under demanding heavy-equipment operation.\u003c\/p\u003e\n\n\u003ch2\u003eProduct Highlights\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 3278163 \/ 327-8163\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDirect Fit OEM Replacement:\u003c\/strong\u003e Engineered to exact Caterpillar manufacturing dimensions and tolerances for seamless installation without modification.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeavy-Duty Precision Components:\u003c\/strong\u003e Crafted from high-strength alloy steel and wear-resistant internal parts to withstand high hydraulic pressures and extreme load cycles.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOptimized Hydraulic Performance:\u003c\/strong\u003e Precision-ground rotating components minimize mechanical friction, reduce fluid power loss, and ensure smooth, consistent pressure delivery.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable style=\"width:100%; border-collapse: collapse; margin: 15px 0;\"\u003e\n  \u003cthead\u003e\n    \u003ctr style=\"background-color: #f2f2f2; border-bottom: 2px solid #dddddd;\"\u003e\n      \u003cth style=\"padding: 10px; text-align: left; border: 1px solid #dddddd;\"\u003eParameter\u003c\/th\u003e\n      \u003cth style=\"padding: 10px; text-align: left; border: 1px solid #dddddd;\"\u003eSpecification\u003c\/th\u003e\n    \u003c\/tr\u003e\n  \u003c\/thead\u003e\n  \u003ctbody\u003e\n    \u003ctr style=\"border-bottom: 1px solid #dddddd;\"\u003e\n      \u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003e3278163 \/ 327-8163\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"border-bottom: 1px solid #dddddd; background-color: #f9f9f9;\"\u003e\n      \u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003e\u003cstrong\u003eProduct Type\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003eRotating Group \/ Hydraulic Pump Component\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"border-bottom: 1px solid #dddddd;\"\u003e\n      \u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003e\u003cstrong\u003eBrand Compatibility\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003eCaterpillar (CAT)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"border-bottom: 1px solid #dddddd; background-color: #f9f9f9;\"\u003e\n      \u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003eMain Hydraulic Pump \u0026amp; Transmission Hydraulics\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"border-bottom: 1px solid #dddddd;\"\u003e\n      \u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003eHigh-Strength Alloy Steel \u0026amp; Friction-Resistant Materials\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"border-bottom: 1px solid #dddddd; background-color: #f9f9f9;\"\u003e\n      \u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd style=\"padding: 10px; border: 1px solid #dddddd;\"\u003e6 Months Warranty\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eCompatible Models \u0026amp; Equipment\u003c\/h2\u003e\n\u003cp\u003eThis premium rotating group pump assembly is precision-engineered to fit a broad range of Caterpillar machinery and equipment:\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBackhoe Loaders:\u003c\/strong\u003e 414E, 416E, 416F, 422E, 422F, 424B, 424B HD, 428E, 428F, 434E, 434F\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWheel Loaders \u0026amp; Forest Machines:\u003c\/strong\u003e 988K, 568 FM LL\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWheel Tractor-Scrapers:\u003c\/strong\u003e 621H, 621K, 623H, 623K LRC, 627H, 627K LRC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDiesel Engines \u0026amp; Transmissions:\u003c\/strong\u003e C15, TH35-C15T\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eKey Applications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHydraulic System Overhaul \u0026amp; Rebuild:\u003c\/strong\u003e Essential internal core component for rebuilding worn hydraulic pumps to restore full operational pressure and flow efficiency.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeavy Construction \u0026amp; Earthmoving:\u003c\/strong\u003e Designed to maintain high hydraulic responsiveness during intensive digging, loading, and scraping operations.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIndustrial \u0026amp; Forestry Duty:\u003c\/strong\u003e Built for reliable performance under heavy power demands in demanding logging, mining, and highway tractor applications.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eWhy Choose Our Aftermarket CAT Parts?\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGuaranteed OEM Compatibility:\u003c\/strong\u003e Manufactured under strict ISO 9001 quality guidelines to match original CAT specifications and dimensional accuracy.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCost-Effective Reliability:\u003c\/strong\u003e Restore factory hydraulic power and performance at a fraction of genuine OEM dealer pricing.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReady to Ship:\u003c\/strong\u003e Kept in stock for immediate dispatch to reduce machine downtime and keep your fleet operational.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDedicated Technical Support:\u003c\/strong\u003e Backed by a 6-month warranty and professional heavy machinery hydraulic expertise.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr\u003e\n\n\u003ch2\u003eFrequently Asked Questions (FAQ)\u003c\/h2\u003e\n\u003cdiv style=\"background-color: #f9f9f9; border-left: 4px solid #0056b3; padding: 15px; margin-bottom: 15px;\"\u003e\n  \u003cp\u003e\u003cstrong\u003eQ: Is this rotating GP pump assembly a genuine Caterpillar part?\u003c\/strong\u003e\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This is a premium-grade, OEM-compatible aftermarket replacement component. It is engineered to exact Caterpillar technical specifications, serving as a direct drop-in replacement for part number 327-8163 (3278163).\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"background-color: #f9f9f9; border-left: 4px solid #0056b3; padding: 15px; margin-bottom: 15px;\"\u003e\n  \u003cp\u003e\u003cstrong\u003eQ: What is covered under the 6-month warranty?\u003c\/strong\u003e\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Our 6-month warranty covers all manufacturing defects, material flaws, and precision tolerance issues under standard operating and installation procedures.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"background-color: #f9f9f9; border-left: 4px solid #0056b3; padding: 15px; margin-bottom: 15px;\"\u003e\n  \u003cp\u003e\u003cstrong\u003eQ: What maintenance step is critical when replacing the 327-8163 rotating group?\u003c\/strong\u003e\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Always thoroughly flush the hydraulic system, clean the reservoir, and replace the hydraulic filter. Make sure to fill the pump housing with fresh hydraulic oil prior to startup to prevent dry friction damage.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv style=\"background-color: #f9f9f9; border-left: 4px solid #0056b3; padding: 15px; margin-bottom: 15px;\"\u003e\n  \u003cp\u003e\u003cstrong\u003eQ: How fast can this part be shipped for an emergency repair?\u003c\/strong\u003e\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e In-stock items typically ship out within 3–5 business days. We offer expedited air freight options to minimize equipment idle time during urgent repairs.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003chr\u003e\n\n\u003cdiv style=\"text-align: center; background-color: #f4f6f8; padding: 15px; border-radius: 6px; margin: 25px 0;\"\u003e\n  \u003cspan style=\"font-size: 16px; color: #333;\"\u003eExplore our full range of heavy-duty hydraulic pumps and parts:\u003c\/span\u003e \n  \u003cbr style=\"margin-bottom: 5px;\"\u003e\n  \u003ca href=\"\/collections\/piston-pump-parts-caterpillar\" style=\"color: #0056b3; font-weight: bold; text-decoration: underline; font-size: 17px;\"\u003e\n    View All Caterpillar Piston Pump Parts »\n  \u003c\/a\u003e\n\u003c\/div\u003e\n\n\u003ch3 style=\"text-align: center; margin-top: 30px;\"\u003eNeed a Quote for CAT 3278163 (327-8163)?\u003c\/h3\u003e\n\u003cp style=\"text-align: center;\"\u003eContact us today for real-time pricing, volume order discounts, and fast worldwide shipping.\u003c\/p\u003e\n\u003cp style=\"text-align: center; margin-bottom: 30px;\"\u003e\n  \u003ca href=\"\/pages\/contact\" style=\"background-color: #ffcc00; color: #000; padding: 12px 25px; text-decoration: none; font-weight: bold; border-radius: 4px; display: inline-block;\"\u003eRequest a Quote\u003c\/a\u003e\n\u003c\/p\u003e","brand":"HEPUMP","offers":[{"title":"Default Title","offer_id":47304189837468,"sku":null,"price":0.0,"currency_code":"CNY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0738\/7385\/0524\/files\/caterpillar-327-8163-hydraulic-rotating-gp-pump-1.jpg?v=1785662638","url":"https:\/\/hepumpstore.com\/products\/cat-3278163-327-8163-hydraulic-rotating-gp-pump","provider":"HEPUMP","version":"1.0","type":"link"}