The New Holland 5138544 is a genuine OEM shim designed for critical clearance adjustments within various New Holland and Case IH agricultural and construction machinery components. This precision-engineered shim ensures optimal spacing and alignment, contributing to the longevity and efficient operation of gearboxes, axles, and other mechanical assemblies. With an outer diameter of 40 mm, an inner diameter of 30 mm, and a thickness of 1 mm, it provides reliable performance for compatible New Holland and Case IH tractor and loader models.