This professional-grade tool is a must-have for any fleet maintenance operation dealing with GM 6.6L Duramax diesel engines. Crankshaft seal leaks can lead to significant engine damage, resulting in expensive repairs and extended periods of vehicle unavailability. The OTC 6741 eliminates this risk by providing a precise and efficient installation process. Its two-piece design allows for even force distribution across the inner and outer seal bodies, preventing misalignment, a leading cause of leaks. This simple yet effective design ensures a proper press fit, creating a secure seal and preventing future leaks. The OTC 6741 is comparable to OE tool #J-44642, ensuring compatibility and performance you can trust. Invest in the OTC 6741 today and experience the difference of precision engineering in your fleet maintenance strategy. Reduce repair costs, minimize downtime, and maximize the lifespan of your vehicles. This essential tool will quickly pay for itself through reduced repair expenses and increased operational efficiency.