621501-10 Manual Vent Gas Cap for Boat Fuel Tank Cap Compatible with Moeller Tempo & Old Style Portable Marine Gas Tanks Cover (Black, 1 Pack)

【Replacement Part Number】621501-10 【Applicable Fuel Tank Models】031103, 031106, 031109, 031112, 031212, 620003, 620049, 630012, 630013, 630014, 620040, 720040, 730014, and 730025, etc. 【Marine Fuel Tank Cap Function】 Sealing fuel tank: Creates a tight seal with the fuel tank opening Stops air and water from entering the fuel tank Manual venting: Features a twist valve for adjustable ventilation, has a manual venting function High quality: high quality plastic professional design corrosion-resistant Easy to Use: To open the gas cap, grasp it and turn it counterclockwise. When closing the gas cap, align it properly with the fuel tank opening, turn it clockwise until locks into place. 【Package】: 1 x fuel tank gas cap for sealing fuel tank 【Colour】: Black

• Wide Compatibility: This manual vent gas cap is specifically designed as a direct replacement for Moeller Tempo part #621501-10. It seamlessly fits a wide range of portable marine fuel tanks including models 031103, 031106, 031109, 031112, 031212, 620003, 620049, 630012, 630013, 630014, 620040, 720040, 730014, and 730025. Also compatible with Attwood, Bass Tracker, Scepter, Quicksilver, Dura-Tank, Mercury, and Yamaha tanks in 3, 6, and 12-gallon sizes
• Manual Venting Design for Safe & Adjustable Airflow: Features a user-operated twist valve that allows you to easily open or close the vent as needed. This manual venting function prevents fuel tank collapse or expansion caused by temperature changes, pressure variations, or altitude shifts. Ensures optimal tank ventilation for smooth engine operation and prevents vacuum lock
• Superior Leak-Proof Seal: The gas cap is engineered to create a tight, secure seal with the fuel tank opening, effectively preventing fuel leaks and evaporation. The robust design also blocks air and water from entering the tank. Keeps your fuel clean and your engine running efficiently
• Durable & Corrosion-Resistant Construction: Crafted from high-hardness, industrial-grade plastic that is resistant to rust, corrosion, UV exposure, and aging. Withstands harsh marine environments, including exposure to saltwater, gasoline, diesel, and chemicals. This sturdy cap is built to last and reduces the risk of damage or fuel spillage in case of impact
• Easy Tool-Free Installation & Maintenance: Designed for quick and hassle-free replacement—no tools required. Simply align the cap with the tank opening and turn clockwise to lock into place. To vent, twist the top counterclockwise. For longevity, periodically clean the cap to remove dirt, fuel residue