The ACL standard main bearing set for Toyota 1HZ Land Cruiser diesel engines supplies OEM-size bearings with extra oil clearance intended for engines that need improved lubrication margins. This set is described as high-performance with additional oil clearance to suit reconditioned or higher-demand diesel 1HZ applications. It emphasizes correct running clearance for longevity after installation.
ACL Toyota 1HZ Landcruiser Diesel Standard High Performance W/ Extra Oil Clearance Main Bearing Set