All internal engine wear surfaces become worn over time.
This is true for crankshaft journals, connecting rods, camshaft lobes, piston rings, bearings, etc.
You'll need to replace them all when rebuilding a worn out engine in order to regain the engine's original performance.
This replacement connecting rod bearing fits 41-45 MB/GPW, 46-49 CJ2A, 48-53 CJ3A, 49-50 Jeepster VJ, 46-64 Pickup / Station Wagon, 50-52 M38, 52-57 M38A1, 53-64 CJ3B, 58-64 FC-150, 63-64 FC-170, 65-71 DJ5, 55-71 CJ5 / CJ6 models equipped with 134 ci L and F-Head engines with 0.040-inch under size crank.
Replaces OE A-7237.