One New Aftermarket Replacement Inner Valve Spring Fits Caterpillar (Fits CAT) 3500 Series EnginesThis aftermarket replacement inner valve spring Fits Caterpillar (Fits CAT) OEM part number 3165977 and fits the heavy-duty 3500 Series diesel engines used in large construction and industrial equipment. The inner valve spring seats inside the cylinder head valve spring assembly, working alongside the outer spring to maintain precise valve timing and sealing under the high-compression demands of the 3500 Series V-type engines.Specifications Dimensions: 2.76 x 1.18 x 1.18 in. Weight: 0.2 lbs. Position: Inner (valve spring assembly) Compatible ModelsFits Caterpillar 3500 Series Engines / Equipment: 3508, 3508B, 3508C, 3512, 3512B, 3512C, 3516, 3516B, 3516C, 5130B, 5230, 5230B, 776C, 776D, 777, 777B, 777C, 777DReplaces Part Number(s):3165977, 3165977-AAftermarket Interchange NumbersENL80-0165, M-3165977 (Interstate-McBee)New aftermarket replacement part - not remanufactured, not used.
