Fitting models from 2003 to 2018, the Cummins 3957492 rear main seal housing gasket guarantees the engine's integrity for both 5.9 and 6.7L versions. This crucial part, made specifically for the Dodge Cummins engine seal, is a reliable barrier against oil leaks and is vital to engine performance and maintenance. This rear main seal is a direct replacement for the original 5.9 Cummins rear main seal and the rear main seal 6.7 Cummins, and it is designed for those looking for dependable Cummins engine components. The Cummins rear seal replacement, which is made of premium materials and engineering, provides a reliable answer for all issues related to the Cummins 5.9 engine gasket or the Cummins 6.7 seal kit.