Yamaha Outboard Fuel Pumps & Fuel Pump Assemblies

Shop Yamaha fuel pumps, fuel pump assemblies, gaskets, and related components for compatible Yamaha outboard engines. PartsVu carries OEM Yamaha outboard fuel-pump options for different fuel-system applications, including low-pressure and high-pressure systems.

Before ordering a Yamaha fuel pump for an outboard, confirm the exact engine model, production or serial information, original pump or assembly part number, and whether the application uses a low-pressure or high-pressure fuel system. Similar-looking pumps are not necessarily interchangeable.

Choose the Right Yamaha Outboard Fuel Pump

Yamaha outboard fuel systems can use different pump types and assemblies depending on the engine family and fuel-system design. Start by identifying which part of the fuel system you are servicing.

• Low-pressure fuel pumps: Feed fuel from the tank side of the system toward downstream fuel-system components. Confirm the exact Yamaha application, mounting arrangement, fuel-line connections, and original part number.
• High-pressure fuel pumps: Used in compatible fuel-injected applications to supply fuel at the pressure required by the injection system. These pumps may be associated with VST or other high-pressure fuel-system components depending on the engine.
• Fuel pump assemblies: Complete pump assemblies may include housings, fittings, diaphragms, or related components depending on the product.
• Gaskets and service components: Some repairs may require only sealing or service components rather than replacement of the complete fuel pump assembly.

Low-Pressure vs High-Pressure Yamaha Fuel Pumps

A low-pressure Yamaha fuel pump and a high-pressure fuel pump perform different functions within the fuel system and should not be treated as interchangeable.

Low-pressure pumps generally move fuel from the tank side of the system toward the engine's downstream fuel-delivery components. High-pressure pumps are used where the fuel system requires higher pressure for fuel injection.

Use the engine model, parts schematic, original pump number, and fuel-system configuration to identify the correct replacement rather than relying only on horsepower or appearance.

What to Check Before Ordering a Yamaha Fuel Pump

Before purchasing a Yamaha outboard fuel pump replacement, confirm:

• Exact Yamaha outboard model
• Production range, serial information, or PID where applicable
• Original Yamaha fuel-pump or assembly part number
• Low-pressure or high-pressure fuel-system application
• Fuel-line and connector configuration
• Mounting arrangement
• Any included gaskets, seals, fittings, or related components
• Superseded or replacement part-number information

If the original part number has been superseded, confirm that the current replacement is approved for the exact engine application before ordering.

Does Sputtering or Hard Starting Mean the Fuel Pump Is Bad?

Not necessarily. Symptoms such as sputtering, hard starting, hesitation, stalling, or inconsistent acceleration can be related to a fuel pump, but they can also have other causes.

Before replacing the pump, inspect or consider related fuel-system components such as:

• Fuel filters
• Fuel lines and connections
• Fuel quality or contamination
• Carburetors or fuel injectors
• VST or other fuel-delivery components
• Electrical connections where applicable

A symptom alone does not confirm that the fuel pump is the failed component. Use the appropriate Yamaha service information and parts schematic when diagnosing the system.

Related Yamaha Fuel-System Parts

If you are servicing a Yamaha outboard fuel system, related components may also need inspection or replacement.

• Yamaha Outboard Parts
• Yamaha Fuel Filters
• Yamaha Carburetors & Components

Use the appropriate Yamaha parts resources and product fitment information to confirm compatibility before ordering.

Yamaha Outboard Fuel Pump FAQs

How do I find the correct Yamaha fuel pump for my outboard?

Start with the exact Yamaha engine model, production or serial information, and existing fuel-pump or assembly part number. Then confirm whether the application uses a low-pressure or high-pressure pump and match the fuel-line, connector, and mounting configuration.

What is the difference between a low-pressure and high-pressure Yamaha fuel pump?

Low-pressure and high-pressure pumps serve different functions within the fuel system. Low-pressure pumps generally move fuel toward downstream engine components, while high-pressure pumps supply the pressure required by compatible fuel-injection systems. They should not be assumed interchangeable.

Can I replace only part of a Yamaha fuel pump assembly?

Sometimes. Depending on the pump design and condition, individual gaskets, seals, diaphragms, or other service components may be available. In other applications, the complete pump assembly may need replacement.

Do sputtering or hard starting always mean the Yamaha fuel pump is failing?

No. Similar symptoms can also be caused by fuel filters, fuel lines, contaminated fuel, carburetors, injectors, or other fuel-system components. Diagnose the system before replacing the pump.

How do I confirm a Yamaha outboard fuel pump replacement?

Compare the existing part number with the current Yamaha replacement, check for supersession information, and verify engine model, production range, pump type, connections, and mounting before ordering.