{"product_id":"1086503-piston-as-fits-caterpillar-models","title":"1086503 Piston As Fits Caterpillar Models","description":"\u003ch3\u003eOne New Aftermarket Replacement Piston Assembly for Caterpillar (Cat) Construction Equipment\u003c\/h3\u003e\u003cp\u003eThis aftermarket replacement piston assembly fits the main hydraulic pump on Caterpillar (Cat) construction equipment. The hydraulic pump piston is a precision internal component that operates under high pressure within the pump's rotating group, maintaining fluid displacement and system performance. Worn or damaged pistons can cause loss of hydraulic pressure, reduced implement response, and increased pump wear. Replacing this piston restores pump efficiency and helps protect downstream hydraulic components.\u003c\/p\u003e\u003ch4\u003eCompatible Models\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eCaterpillar:\u003c\/strong\u003e Verify compatibility by serial number with your Cat dealer or parts catalog. This piston is designed for use in the main hydraulic pump assembly on applicable Caterpillar construction equipment models.\u003c\/p\u003e\u003ch4\u003eReplaces Part Number(s):\u003c\/h4\u003e\u003cp\u003e1086503\u003c\/p\u003e\u003cp\u003eNew aftermarket replacement part - not remanufactured, not used.\u003c\/p\u003e","brand":"Reliable Aftermarket Parts, Inc® -OD","offers":[{"title":"Default Title","offer_id":42453325611091,"sku":"1086503","price":57.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0079\/4060\/3955\/files\/1086503_01.jpg?v=1757923064","url":"https:\/\/www.reliableaftermarketparts.co.uk\/products\/1086503-piston-as-fits-caterpillar-models","provider":"Reliable Aftermarket Parts, Inc®","version":"1.0","type":"link"}