One New Aftermarket Replacement Inner Valve Spring Fits Caterpillar (Fits CAT) Industrial and Construction EnginesThis aftermarket inner valve spring is a direct replacement Fits Caterpillar OEM part number 9M5349. The inner valve spring is part of the dual valve spring assembly in the cylinder head valve train, working alongside the outer spring to maintain precise valve seating and control valve float across the RPM range. Compatible with a wide range of Fits Caterpillar diesel and gas engines used in track-type tractors and industrial power applications.Specifications Free Length: 55.35 mm (2.179 in.) Outer Diameter (OD): 28.57 mm (1.125 in.) Solid Length: 28.1 mm Wire Diameter: 3.175 mm (0.125 in.) Weight: 0.09 lbs. Compatible Engine ModelsFits Caterpillar Diesel Engines: D342, D342C, D353C, D379, D379A, D379B, D398, D398A, D398B, D399Fits Caterpillar Gas Engines: G342C, G379, G398, G398B, G399Fits Caterpillar Track-Type Tractors: D7, D7E, D8, D8H, D8K, D9HReplaces Part Number(s):9M5349, 9M-5349, CA9M5349Aftermarket Interchange NumbersENL80-0176 (aftermarket cross-reference), Interstate-McBee M 9M5349New aftermarket replacement part - not remanufactured, not used.
