41158-921-000 Shim B (0.15Mm) - Overview. The 41158-921-000 Shim B (0.15Mm) is a precision-engineered thin shim with a thickness of 0.15 millimeters, designed to provide exact gear spacing adjustments in Honda marine engine systems. It plays an essential role in maintaining reliable operation and smooth mechanical function within the gear assembly of your marine engine. By ensuring proper alignment, it contributes to extending the life of your equipment.. Key Features. A genuine OEM gear shim specifically engineered for Honda marine engines.. Thickness of 0.15 mm for precise adjustments in gear spacing.. Maintains optimal mechanical function and reduces wear on gear components.. Manufactured to match strict factory dimensions and tolerances.. Seamlessly integrates with existing OEM hardware and seals.. Supports smooth and efficient gear operation, contributing to overall engine reliability.. Why Choose Genuine OEM. Using original Honda parts like the 41158-921-000 Shim B preserves the