Suzuki OEM Vapor Separator Tank (VST) O-Ring / Seal – Part No. 15613-88L00

This genuine Suzuki OEM O-ring is a critical component within the high-pressure electronic fuel injection (EFI) fuel system of modern Suzuki 4-stroke outboard engines. It seals the mating surfaces between the upper and lower halves of the Vapor Separator Tank (VST) assembly, preventing high-pressure fuel or volatile fuel vapors from leaking out into the engine cowling.

Component Function & Specifications

• Primary Function: Seals the upper and lower halves of the VST assembly to prevent fuel and vapor leaks.
• Material Property: Manufactured using a specialized fuel-resistant rubber compound designed to withstand constant contact with gasoline and ethanol blends without expanding, shrinking, or degrading.
• Crucial Care Note: The VST O-ring should always be replaced whenever the tank is opened for service (such as replacing the internal high-pressure fuel pump filter). Reusing an old, compressed O-ring can result in unsafe fuel leaks.

Engine Compatibility

Fits a wide range of mid-tier to high-power Suzuki 4-stroke outboard motors, primarily across production years 2010 onwards:

• Suzuki DF40A / DF50A / DF50AV
• Suzuki DF60A / DF60AV
• Suzuki DF70A / DF80A / DF90A
• Suzuki DF100A / DF115A / DF140A

Fitment Note

Always cross-reference this part number with your engine serial number to confirm fitment before ordering. This seal is commonly replaced as part of a VST service kit or fuel pump filter replacement.