{"product_id":"enl80-0175-inner-spring","title":"7N1903 Inner Valve Spring Fits Caterpillar Industrial Construction Models","description":"\u003ch3\u003eOne New Aftermarket Replacement Inner Valve Spring Fits Caterpillar (Fits CAT) 3500 Series Industrial and Construction Engines\u003c\/h3\u003e\u003cp\u003eThis aftermarket replacement inner valve compression spring installs in the cylinder head of Fits Caterpillar 3500-series diesel and gas engines, working alongside the outer valve spring to maintain consistent valve closure against the seat. The inner spring helps isolate vibration and ensures reliable valve train operation across both intake and exhaust positions. Fits Caterpillar OEM part number 7N-1903.\u003c\/p\u003e\u003ch4\u003eSpecifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eFree Length: 51.54mm\u003c\/li\u003e\n\u003cli\u003eMaximum Solid Length: 28.68mm\u003c\/li\u003e\n\u003cli\u003eApplication: Intake and exhaust valves\u003c\/li\u003e\n\u003cli\u003ePosition: Inner (used in conjunction with outer spring 7N1904)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatible Engine Models\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eFits Caterpillar Industrial \/ Gen Set \/ Diesel Engines:\u003c\/strong\u003e 3508, 3508B, 3508C, 3512, 3516, 3516B\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFits Caterpillar Natural Gas Engines:\u003c\/strong\u003e G3508, G3508B, G3512, G3512B, G3516, G3516B, G3520B\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFits Caterpillar Power Modules:\u003c\/strong\u003e PM3508, PM3512, PM3516, PMG3516\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFits Caterpillar Locomotive Engines:\u003c\/strong\u003e 3508, 3512, 3516\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFits Caterpillar Marine Engines \/ Marine Auxiliary:\u003c\/strong\u003e 3508, 3512, 3516, 3516B\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFits Caterpillar Vehicular Engines:\u003c\/strong\u003e 3512, 3516\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFits Caterpillar Track-Type Tractors:\u003c\/strong\u003e D11N, D11R\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFits Caterpillar Wheel Loaders:\u003c\/strong\u003e 994\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFits Caterpillar Off-Highway Trucks:\u003c\/strong\u003e 777B, 777C, 785, 785B, 789, 789B, 793, 793B\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFits Caterpillar Mining Excavators:\u003c\/strong\u003e 5130, 5230\u003c\/p\u003e\u003ch4\u003eReplaces Part Number(s):\u003c\/h4\u003e\u003cp\u003e7N1903, 7N-1903, ENL80-0175\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":17725326327859,"sku":"ENL80-0175","price":24.18,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0079\/4060\/3955\/files\/ENL80-0175_01.jpg?v=1757772183","url":"https:\/\/www.reliableaftermarketparts.com\/products\/enl80-0175-inner-spring","provider":"Reliable Aftermarket Parts, Inc®","version":"1.0","type":"link"}