Caterpillar 387-9839 Connecting Rod Assembly

Technical specification for Caterpillar connecting rod assembly part number 387-9839. This forged steel component connects the piston to the crankshaft in Caterpillar C3.3 and C3.3B diesel engines. The assembly includes a bronze small-end bushing for wrist pin articulation. Designed for high-cycle fatigue resistance in compact construction equipment applications. Direct replacement for OEM reference 387-9839. Cross-references Kubota part numbers 1G772-22013, 1G772-22012, and 1G772-22010 for the V3307 engine series. Compatible with Caterpillar skid steer loaders (236D, 242D, 246D, 262D series), multi terrain loaders (257D, 277D series), compact track loaders (259D, 279D, 289D series), and mini excavators (308, 309 series). Unit weight approximately 1.14 kg.