Description
SIERRA 3/8-inch Fuel Connector for Mercury Outboards – 18-8091 is a fuel connector used in Mercury/Mariner outboard fuel systems. The connector size and mating style are application-specific, so it should be matched to the existing connector and OEM/Sierra reference rather than selected by hose diameter alone.
This Sierra service part is intended for the application described below. Match hose size, connector style, engine family, drive model, or OEM reference number as applicable before installation.
Key Features
- 3/8 in. (9.5 mm) fuel connection
- Designed for Mercury/Mariner outboard applications
- Mates with Sierra 18-80402
- Service replacement for factory-style fuel connection
- Fit-specific marine fuel-system component
Specifications
- Product type: Fuel Connector
- Connection size: 3/8 in. (9.5 mm)
- Application: Mercury/Mariner
- Mating / thread detail: Mates with Sierra 18-80402
- Sierra part number: 18-8091
Interchange
- No specific OEM interchange number was verified for this item; confirm by Sierra part number and application before ordering.

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