{"product_id":"cat-2959656-295-9656-piston-pump-piston-assembly","title":"CAT 2959656 (295-9656) Piston As | Fits 330D 336D 336E 340D L Excavators","description":"\u003cdiv style=\"margin: 15px 0 25px 0; padding: 15px; background-color: #fcfcfc; border: 1px dashed #e0e0e0; border-radius: 6px; text-align: center;\"\u003e\n  \u003cp style=\"margin: 0 0 10px 0; font-weight: bold; font-size: 15px; color: #333;\"\u003eIn Stock \u0026amp; Ready for Global Express Dispatch\u003c\/p\u003e\n  \u003ca href=\"\/pages\/contact\" style=\"background-color: #ffcc00; color: #000; padding: 12px 28px; text-decoration: none; font-weight: bold; border-radius: 4px; display: inline-block; font-size: 16px; box-shadow: 0 2px 4px rgba(0,0,0,0.1);\"\u003eRequest a Quick Quote\u003c\/a\u003e\n  \u003cp style=\"margin: 10px 0 0 0; font-size: 13px; color: #666;\"\u003e\n    ✓ Premium Caterpillar Quality Spec  |  ✓ 100% Direct Fit  |  ✓ Fast Global Shipping\n  \u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cp\u003ePremium hydraulic piston pump piston assembly (piston shoe kit) designed as a direct OEM-compatible replacement for Caterpillar (CAT) heavy excavators and forestry machines. Precision-engineered to overhaul main hydraulic pumps, restoring accurate reciprocating stroke motion, smooth fluid displacement, and high-pressure operational efficiency under severe jobsite conditions.\u003c\/p\u003e\n\n\u003ch2\u003eProduct Highlights\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 2959656 \/ 295-9656\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDirect Fit OEM Replacement:\u003c\/strong\u003e Dimension tolerances, slipper face finishes, and ball-joint clearances match original Caterpillar engineering specifications perfectly for smooth pump rebuilding.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeavy-Duty Construction:\u003c\/strong\u003e Manufactured with high-grade alloy steel and wear-resistant precision surfaces to withstand continuous reciprocating friction, high load cycles, and extreme hydraulic pressure.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCost-Effective Overhaul Solution:\u003c\/strong\u003e Restores full main pump volumetric efficiency, system pressure, and machine cycle performance back to OEM standards at a fraction of the cost of replacing the complete pump unit.\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;\"\u003e2959656 \/ 295-9656\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;\"\u003ePiston Pump Piston Assembly \/ Piston Shoe Kit\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 Overhaul \u0026amp; Maintenance\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; Wear-Resistant Metals\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;\"\u003e12 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 piston pump piston assembly is precision-engineered to fit the following Caterpillar excavators and forestry machines:\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e330D Series Excavators:\u003c\/strong\u003e Caterpillar 330D \/ 330D FM \/ 330D L \/ 330D LN \/ 330D MH\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e336D \u0026amp; 336E Series Excavators:\u003c\/strong\u003e Caterpillar 336D \/ 336D L \/ 336D LN \/ 336D2 \/ 336D2 GC \/ 336D2 L \/ 336E \/ 336E L \/ 336E LN\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e340D Series Excavators:\u003c\/strong\u003e Caterpillar 340D L \/ 340D2 L\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eForestry Loggers:\u003c\/strong\u003e Caterpillar 568 FM \/ 568 FM LL\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 Pump Rebuilding:\u003c\/strong\u003e Serves as a vital internal rotary group replacement kit for scored, worn, or damaged pump pistons.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePerformance \u0026amp; Pressure Restoration:\u003c\/strong\u003e Eliminates internal fluid bypass, sluggish hydraulic cylinder response, and pump noise caused by excessive piston-to-bore clearance.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePreventative Maintenance:\u003c\/strong\u003e Provides heavy equipment repair shops and field mechanics with precision-matched components for reliable scheduled pump overhauls.\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 Quality:\u003c\/strong\u003e Manufactured under strict ISO 9001 quality standards to match original Caterpillar factory dimensions and surface finish hardness levels.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCost-Effective Solution:\u003c\/strong\u003e Achieve premium dealer-level reliability and identical hydraulic performance at a fraction of the OEM replacement price.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReady to Ship:\u003c\/strong\u003e Kept in stock for immediate worldwide dispatch to reduce your machine's idle downtime significantly.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIndustry-Leading Support:\u003c\/strong\u003e Backed by a full 1-year warranty and a team of professional heavy machinery hydraulic technical experts.\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 piston 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 part. It is engineered to exact CAT dimensional tolerances and technical specifications, serving as a direct drop-in replacement for part number 295-9565 \/ 2959656.\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 12-month warranty?\u003c\/strong\u003e\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Our 12-month warranty fully covers all manufacturing defects, material failures, and workmanship issues under standard operating conditions.\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 precautions should be taken during installation?\u003c\/strong\u003e\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Thoroughly clean and flush the main pump housing before installation. We recommend replacing the cylinder block barrel, valve plate, and shaft seals simultaneously to ensure even wear and maximum pump service life.\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 long does international shipping take?\u003c\/strong\u003e\u003c\/p\u003e\n  \u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e In-stock orders are typically dispatched within 3–5 business days. We offer expedited shipping and global air freight options for emergency machine breakdown situations.\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 pump replacement parts:\u003c\/span\u003e \n  \u003cbr style=\"margin-bottom: 5px;\"\u003e\n  \u003ca href=\"\/collections\/piston-pump-parts-series\" style=\"color: #0056b3; font-weight: bold; text-decoration: underline; font-size: 17px;\"\u003e\n    View All Piston Pump Parts \u0026amp; Repair Kits »\n  \u003c\/a\u003e\n\u003c\/div\u003e\n\n\u003ch3 style=\"text-align: center; margin-top: 30px;\"\u003eNeed a Quote for CAT 2959656 Piston As?\u003c\/h3\u003e\n\u003cp style=\"text-align: center;\"\u003eContact us today for the latest pricing, bulk discounts, and shipping availability.\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":"Caterpillar","offers":[{"title":"Default Title","offer_id":48123783217308,"sku":null,"price":0.0,"currency_code":"CNY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0738\/7385\/0524\/files\/caterpillar-295-9656-piston-assembly-1.jpg?v=1792937932","url":"https:\/\/hepumpstore.com\/products\/cat-2959656-295-9656-piston-pump-piston-assembly","provider":"HEPUMP","version":"1.0","type":"link"}