Yamaha - Diaphragm Assembly Fuel Pump Component 7CU-E1960-00-00. Overview. Diaphragms are one of those small parts that can cause big headaches when they start to wear out. I've seen engines struggle to stay running or lose power just because the fuel pump couldn't keep up anymore. Once you swap in a fresh diaphragm, fuel delivery evens out and the engine runs steady again. It's a simple fix that makes a noticeable difference on the water.. Key Features. • Consistent Fuel Pump Operation - Helps maintain steady fuel flow through the pump system.• Flexible Diaphragm Material - Designed to move efficiently with engine pulses for proper fuel transfer.• OEM Fit and Sealing - Matches factory specs to ensure proper fit and leak-free performance.• Reliable Performance Support - Restores fuel delivery consistency for smooth engine operation.. Engine & Boat Compatibility. Designed for Yamaha outboard engines that utilize diaphragm-style fuel pumps. Commonly used across a range of Yamaha outboard