Oil Tank Cap Replacement for Yamaha 2-Stroke Outboards 6E5-21770-03-00

Product Description The 6E5-21770-03-00 oil tank cap is a model-specific replacement compatible with select Yamaha 2-stroke outboard engines using a separate remote oil reservoir. It closes the oil tank fill opening and replaces a cap that is missing, cracked, worn, or no longer securing correctly. The compact number 6E5217700300 represents the same part number without hyphens. It is not an additional replacement part number. Because this cap was used across numerous outboard configurations, fitment must be confirmed using the complete engine model and the part number shown in the applicable parts diagram. Engine horsepower alone is not sufficient to confirm compatibility. Part number: 6E5-21770-03-00 Cross-reference format: 6E5217700300 Product type: Remote oil reservoir cap assembly Compatibility: Replacement for select Yamaha 2-stroke outboards Package contents: 1 × Oil Tank Cap Assembly Before installation, inspect the existing cap, tank opening, sealing surface, oil hoses, and surrounding components. Replacing the cap will not correct a damaged oil tank neck, faulty oil-level sensor, blocked hose, or oil-transfer pump problem.

• [Model-Specific Compatibility] Replacement for select Yamaha 2-stroke outboard engines equipped with a remote oil reservoir that specifies part number 6E5-21770-03-00. This cap assembly is model specific and is not a universal outboard oil cap.
• [Exact Part Number] Designed as a replacement for part number 6E5-21770-03-00.
• [Remote Oil Tank Application] Closes the fill opening on the compatible remote oil reservoir and helps keep the tank properly covered during marine operation and storage. It is not an engine crankcase oil cap, fuel tank cap, oil-level sensor, or oil-transfer pump.
• [Compare the Existing Cap] Before ordering, compare the complete part number, cap diameter, thread or locking structure, underside profile, sealing surface, and center insert configuration with the existing component. Similar-looking caps used on other outboard and watercraft oil tanks may not be interchangeable.
• [Installation and Package] Stop the engine before replacement and clean dirt or oil residue from the tank opening. Inspect the tank neck and surrounding sealing surface for cracks or damage, then install the cap without excessive tightening. Package includes 1 oil tank cap assembly only; oil tank, hoses, sensor, and other components are not included.