CATERPILLAR-3054-CONROD-BUSH-397mm-SEMI

138-2048 is a semi-finished connecting rod small-end bush for the Caterpillar 3054, supplied with extra material still in place so it can be line-honed to the exact piston pin diameter after pressing into the rod. This is standard practice for small-end bushes since even pistons of the same nominal size carry small manufacturing variation in actual pin diameter — finishing the bush to the pin it will actually run against, rather than a fixed bore size, gives a more accurate fit. Orange.net.za ships this part fast, South Africa-wide.