{"product_id":"1333715-ring-backup-fits-caterpillar-models","title":"1333715 Ring-Backup Fits Caterpillar Models","description":"\u003ch3\u003eOne New Aftermarket Replacement Ring-Backup for Caterpillar (Cat) Engines and Equipment\u003c\/h3\u003e\u003cp\u003eThis aftermarket replacement backup ring (Cat part number 133-3715 \/ 1333715) is used in the fuel injector assembly on Caterpillar 3126, C7, and related engines. The backup ring seats alongside O-ring seals on the electronic unit injector (EUI), providing a critical pressure seal that prevents high-pressure oil and fuel leakage in the injector bore. Proper installation of this ring is essential -- damaged or missing backup rings can cause excessive oil leakage under the valve cover, low actuation pressure, or high-pressure oil intrusion into the fuel supply passage.\u003c\/p\u003e\u003ch4\u003eSpecifications\u003c\/h4\u003e\u003cul\u003e  \u003cli\u003eInner Diameter: 35.53 mm\u003c\/li\u003e  \u003cli\u003eWeight: 0.01 lbs\u003c\/li\u003e  \u003cli\u003eApplication: Fuel injector \/ electronic unit injector (EUI) backup ring\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatible Models\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eCaterpillar Motor Graders:\u003c\/strong\u003e 120H, 135H\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCaterpillar Excavators:\u003c\/strong\u003e 322C, 322C FM, 325C, 325C FM\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCaterpillar Wheeled Excavators:\u003c\/strong\u003e M325C MH\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCaterpillar Wheel Loaders:\u003c\/strong\u003e 938G II, 950G II, 962G II\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCaterpillar Track Loaders:\u003c\/strong\u003e 953C, 963C\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCaterpillar Integrated Toolcarriers:\u003c\/strong\u003e IT38G II, IT62G II\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCaterpillar Track-Type Tractors:\u003c\/strong\u003e D5N, D6N\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCaterpillar Wheel Harvesters:\u003c\/strong\u003e 570B, 580B\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCaterpillar Pipelayers:\u003c\/strong\u003e 561N\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCaterpillar Engines (Truck\/Industrial\/Marine\/Gen Set):\u003c\/strong\u003e 3126, 3126B, 3126E, C7\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCaterpillar Pumpers:\u003c\/strong\u003e SPP101\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCaterpillar Mobile Hydraulic Power Unit:\u003c\/strong\u003e 325C\u003c\/p\u003e\u003ch4\u003eReplaces Part Number(s):\u003c\/h4\u003e\u003cp\u003e1333715, 133-3715\u003c\/p\u003e\u003cp\u003eNew aftermarket replacement part - not remanufactured, not used.\u003c\/p\u003e","brand":"Reliable Aftermarket Parts, Inc®","offers":[{"title":"Default Title","offer_id":40184191746131,"sku":"1333715","price":8.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0079\/4060\/3955\/files\/1333715_01.jpg?v=1698435972","url":"https:\/\/www.reliableaftermarketparts.co.uk\/products\/1333715-ring-backup-fits-caterpillar-models","provider":"Reliable Aftermarket Parts, Inc®","version":"1.0","type":"link"}