Caterpillar 225-7772 225-7781 Main & Connecting Rod Bearing Set

This main and connecting rod bearing set comprises part numbers 225-7772 (main bearing set, standard) and 225-7781 (connecting rod bearing set, standard). Designed for Caterpillar 3054C, 3054E, C4.4, and C4.4T diesel engines, which are based on the Perkins 1104 series. The set supports crankshaft journal diameters at standard undersize. Constructed with aluminum alloy overlay on steel backing for high fatigue resistance and conformability under heavy-duty operating conditions. Direct replacement for Caterpillar OEM references 225-7772, 225-7781, 3537423, and 3111V021. Interchanges with aftermarket references MU5MB0018, U5MB0033, and Kolbenschmidt T427333/T427334. Applicable to backhoe loaders 414E, 416D, 416E, 420D, 420E, 422E, wheel loader 914G, and asphalt pavers AP-300, AP-650B, AP-800D, AP500E.