91304-107-000 O-Ring (9.4X2.4) - Overview. The 91304-107-000 O-Ring (9.4X2.4) is a crucial sealing component for Honda marine engine systems. This O-ring, measuring 9.4 mm in outer diameter and 2.4 mm in cross-section, supports the engine's sealing system, ensuring leak-free operation and reliable performance. It seamlessly integrates with existing engine parts and seals, maintaining the integrity and durability of the Honda equipment.. Key Features. Precisely sized O-ring (9.4x2.4 mm) designed