Fuel Pump Assembly for Tohatsu and Nissan 25–70 HP 2-Stroke Outboards – Replaces 356-04000-0 and 356-04000-1
Fuel Pump Assembly for Tohatsu and Nissan 25–70 HP 2-Stroke Outboards – Replaces 356-04000-0 and 356-04000-1 is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
Delivery and Shipping
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Fuel Pump Assembly for Tohatsu and Nissan 25–70 HP 2-Stroke Outboar...
Fuel Pump Assembly for Tohatsu and Nissan 25–70 HP 2-Stroke Outboards – Replaces 356-04000-0 and 356-04000-1 is backordered and will ship as soon as it is back in stock.
Product Details
This aftermarket fuel pump assembly is designed for selected Tohatsu and Nissan 25–70 HP 2-stroke outboard motors. It is intended to restore dependable fuel delivery when the original pump is worn, damaged, leaking, or no longer operating correctly. Fitment depends on the exact engine model, year, and original pump number, so confirm all application details before ordering.
This assembly is listed as a replacement for Tohatsu part numbers 356-04000-0 and 356-04000-1, along with the corresponding unhyphenated references 356040000, 356040001, 356040000M, and 356040001M.
- Designed as a direct replacement for applicable original fuel pump assemblies.
- Aluminum-alloy housing for durability in marine operating environments.
- Includes gaskets and a hose clamp for the listed installation configuration.
Part Number Matrix
Use the following references to compare the replacement with the pump removed from your engine.
| Brand | Part Number |
|---|---|
| Tohatsu | 356-04000-0 |
| Tohatsu | 356-04000-1 |
| Nissan | 356040000 |
| Nissan | 356040001 |
| Tohatsu | 356040000M |
| Tohatsu | 356040001M |
Engine & Model Compatibility
The applications below are provided as model and year references. Confirm the exact model designation, production year, serial range, mounting arrangement, and original part number before installation.
| Brand | Model | Rated HP | Stroke | Year | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Nissan | NS25C2 | 25 | 2-Stroke | 2002 | 356-04000-0 or 356-04000-1 | Verify the original pump number. |
| Nissan | NS30A3 | 30 | 2-Stroke | 2002 | 356-04000-0 or 356-04000-1 | Verify the original pump number. |
| Nissan | M30A3 | 30 | 2-Stroke | 1996 | 356-04000-0 or 356-04000-1 | Verify the original pump number. |
| Tohatsu | M60B | 60 | 2-Stroke | 2002 | 356-04000-0 or 356-04000-1 | Verify the original pump number. |
| Tohatsu | M70B | 70 | 2-Stroke | 2002 | 356-04000-0 or 356-04000-1 | Verify the original pump number. |
| Nissan | NS60B | 60 | 2-Stroke | 2002 | 356-04000-0 or 356-04000-1 | Verify the original pump number. |
| Nissan | NS70B | 70 | 2-Stroke | 2002 | 356-04000-0 or 356-04000-1 | Verify the original pump number. |
Technical Specifications
- Product Type
- Fuel pump assembly
- Installation
- Direct replacement for applicable original equipment
- Fuel Type
- Gasoline
- Connection
- 1/4-inch hose nipple
- Housing Material
- Aluminum alloy
- Housing Color
- Silver/metallic
- Package Dimensions
- 12 × 10 × 8.5 cm
- Weight
- 345 g (0.76 lb)
- Application
- Selected 2-stroke outboard applications only
- Warranty
- 1 year against manufacturing defects under normal use
What's in the Box
- 1 × Fuel pump assembly
- 1 × Hose clamp, reference 90467-08004-00, 9 × 1 mm
- 2 × Gasket, reference 650-24431-A0-00
Installation Notes
- Turn the engine off and allow it to cool completely.
- Relieve pressure in the fuel system before disconnecting any fuel line.
- Disconnect the battery to help prevent accidental ignition.
- Remove the original fuel pump and clean any remaining gasket material from the mounting surface.
- Install the replacement pump with the supplied gaskets and secure all fuel connections and the hose clamp.
- Reconnect the battery and prime the fuel system according to the engine manufacturer's service instructions.
- Start the engine and inspect the pump, fittings, and hose connections for fuel leakage before operating the boat.
Troubleshooting & FAQ
How do I know if this pump fits my engine?
Compare your engine brand, model, horsepower, stroke type, year, and original pump number with the information on this page. Because model variations can exist within the same horsepower range, do not rely on horsepower alone.
What are common signs of a failing fuel pump?
Possible symptoms include difficult starting, sputtering at higher speeds, surging, inconsistent engine speed, loss of power, visible cracking, or fuel leakage. Diagnose the complete fuel system before replacing the pump.
Is this pump for 2-stroke or 4-stroke engines?
This listing is for selected 2-stroke outboard applications. It is not intended for 4-stroke engines unless the exact engine application and original part number specifically confirm compatibility.
Are replacement gaskets included?
Yes. Two gaskets are included with the fuel pump assembly. Use new gaskets during installation and check the mounting area for leaks after priming the fuel system.
Can I install this fuel pump myself?
Installation may be suitable for someone with marine mechanical experience, but fuel-system work requires careful handling. If you are not familiar with fuel-system safety procedures or the engine service manual, professional installation is recommended.
Is this an OEM part?
No. This is an aftermarket replacement assembly intended to replace the listed original part references. Compare the original pump, mounting arrangement, connections, and part number before purchase.
What is the warranty?
The listed warranty is 1 year against manufacturing defects under normal use. Warranty coverage does not replace the need to confirm fitment or follow proper installation procedures.
Safety & Important Information
- Verify the engine model, year, stroke type, serial information where applicable, and original pump number before ordering.
- Do not install the part if the connections, mounting surface, or pump configuration differs from the original.
- Work in a well-ventilated area away from flames, sparks, and other ignition sources.
- After installation, inspect all connections for fuel leaks before operating the engine.
- This is an aftermarket replacement part, not an original equipment manufacturer component.
About Sea Sierra
- Marine Replacement Parts — Practical replacement components for selected marine engine applications.
- Fitment-Focused Information — Product references and application details are provided to help you compare the replacement with your original part.
- Support for Installation — Review the engine service information and use qualified marine service assistance when needed.
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