Yamaha - Vapor Separator Tank (VST) Fuel Filter 6FP-13915-00-00. Overview. Keeping a fuel-injected Yamaha running right comes down to clean fuel, and this VST fuel filter is right in the middle of that job. When these start clogging up, you'll feel it with rough starts, hesitation, or inconsistent throttle response. It sits inside the vapor separator tank, catching debris before it ever reaches your injectors. If you're doing routine service or chasing fuel issues, this is one of those parts that's worth replacing before it becomes a bigger problem.. Key Features. • Fine Fuel Filtration - Captures debris and contaminants before they reach sensitive fuel system components.. • OEM Fit Precision - Designed to match Yamaha VST housing for secure placement and proper sealing.. • High Surface Area Design - Maximizes filtration capacity while maintaining steady fuel flow.. • Injector Protection - Helps prevent clogging and damage to fuel injectors and internal components.. Engine & Boat Compa