This oil seal is exceptional in the Automotive industry! My analysis of this product showed that it has high-quality materials and flawlessly executed design .It has outstanding performance in keeping oil and other fluids from escaping the transmission. The installation is relatively easy even for DIY beginners. However, it would be a bonus if it comes with installation instructions, especially for those who are new to this field. Overall, this product is highly recommended for any automotive enthusiast who values quality and excellent performance..