The 7MM to 9MM Injector Adapter Sleeve Set is a high-quality replacement part for 1988 - 1994 5.9L Dodge Cummins engines. This adapter sleeve allows you to upgrade your injectors to a larger size, providing increased fuel flow and improved performance. It is made of durable materials and is designed to withstand the high pressures and temperatures of the engine. This adapter sleeve is easy to install and is a direct replacement for the factory part. Upgrade your injectors with the 7MM to 9MM Injector Adapter Sleeve and experience the difference in performance. With a one year unlimited mileage warranty, you can trust that it's built to last.