99103-881-0380 Jet (#38) - Overview. The 99103-881-0380 Jet (#38) is an essential fuel system component specifically designed for Honda marine engine systems. This jet regulates and optimizes the fuel flow within the carburetor to ensure smooth and reliable engine operation. Engineered to factory specifications, it seamlessly integrates with your marine engine's existing fuel delivery system, maintaining performance and durability in real-world marine conditions.. Key Features. Precisely controls fuel flow within the carburetor system to optimize engine efficiency.. Genuine OEM Honda part ensuring exact match to factory dimensions and tolerances.. Plays a critical role in maintaining smooth engine operation and response.. Constructed from robust materials designed to withstand marine environments.. Ensures seamless integration with existing hardware and carburetor components.. Supports Honda marine engines, particularly models such as BF5A3, BF5A4, BF5DH, and others in the active marin