The OEM Caterpillar 454-9920 170.025mm Inner Diameter Cylinder Block Liner is a high-quality replacement part specifically designed for Caterpillar heavy equipment. With a focus on precision and durability, this cylinder block liner ensures a perfect fit and reliable performance for your machinery. Made by the trusted brand CAT, this product is compatible with Caterpillar equipment models, providing you with the assurance that you are investing in a top-notch component for your business or industrial needs.