Over time all internal engine wear surfaces become worn. This is true for crankshaft journals, connecting rods, camshaft lobes, piston rings, bearings, etc. When rebuilding a worn out engine you'll need to replace them all in order to regain the engine's original performance. And, let's face it, Jeep's need all the power Omix-ADA can get. Omix-ADA offers new high quality replacement engine parts to get your Jeep back on the road. This replacement connecting rod bearing set fits 02-06 Liberty KJ and 05-06 Grand Cherokee WK models equipped with 3.7 liter engines and 0.030-inch under size crank. Replaces OE CR6811SI.030