40108-ZW9-830 Oil Case Grommet D - Overview. The 40108-ZW9-830 Oil Case Grommet D is a vital rubber seal component within Honda marine engine systems. It supports the oil case, ensuring effective sealing to prevent oil leaks and maintain proper lubrication. Designed to work seamlessly in Honda engines, this grommet guarantees secure fitment and helps sustain reliable engine operation by protecting internal components from contamination and oil loss.. Key Features. Precise OEM rubber seal designed to fit Honda marine engine oil cases.. Prevents oil leaks, maintaining proper lubrication and engine integrity.. Manufactured to meet exact factory specifications, dimensions, and tolerances.. Ensures seamless integration with existing oil case hardware and other seals.. Contributes to long-lasting engine performance and durability.. Critical component designed specifically for Honda marine engine systems.. Why Choose Genuine OEM. Using original Honda parts like the 40108-ZW9-830 Oil Case Grom