The Cat BM997403 is a genuine OEM shim designed for precise spacing and alignment in various Caterpillar heavy machinery applications. Measuring 71mm in width, 108mm in length, and 1.5mm in thickness, this shim ensures proper component fitment and operational integrity. It is compatible with a wide range of Caterpillar articulated trucks, industrial engines, excavators, forest products machinery, load haul dumps, mobile hydraulic power units, motor graders, off-highway trucks, petroleum packages, track-type tractors, wheel dozers, wheel loaders, wheel tractor-scrapers, and wheeled excavators.