Fuel Pump for Johnson 4 HP, 5 HP & 6 HP 4-Stroke Outboard Models (Replaces 5033371, 5037518)
Fuel Pump for Johnson 4 HP, 5 HP & 6 HP 4-Stroke Outboard Models (Replaces 5033371, 5037518) is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
Delivery and Shipping
Orders are typically processed within 1–2 business days.
U.S. orders usually arrive within 6–15 days, depending on stock location and destination.
International delivery times may vary due to customs processing.
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Fuel Pump for Johnson 4 HP, 5 HP & 6 HP 4-Stroke Outboard Model...
Fuel Pump for Johnson 4 HP, 5 HP & 6 HP 4-Stroke Outboard Models (Replaces 5033371, 5037518) is backordered and will ship as soon as it is back in stock.
Product Details
This is a replacement fuel pump for selected Johnson 4 HP, 5 HP, and 6 HP four-stroke outboard models. It is supplied as a single fuel pump component for replacing a worn or failed original pump.
The pump is listed as a replacement for Johnson part numbers 5033371 and 5037518. Confirm the part number, engine model, year, and mounting and hose connections before ordering.
- Replacement fuel pump for selected Johnson 4-stroke outboards.
- Applicable horsepower range: 4 HP, 5 HP, and 6 HP.
- Mechanical, pulse-operated diaphragm pump design.
- Sold as one fuel pump; additional seals, clamps, hoses, and mounting hardware are not confirmed as included unless specifically shown with the product.
Part Number Matrix
Use the following manufacturer references to help identify the correct replacement. Part-number matching should be confirmed against the original pump and the engine service information.
| Brand | Part Number | Reference Type |
|---|---|---|
| Johnson | 5033371 | Replacement reference |
| Johnson | 5037518 | Replacement reference |
Engine & Model Compatibility
This fuel pump is identified for selected Johnson 4 HP, 5 HP, and 6 HP four-stroke outboard models. The available product record does not establish one universal year range or every individual model and serial-number break.
Before purchase, compare the original pump, mounting arrangement, fuel-line routing, pulse connection, and applicable engine service information. Do not rely on horsepower alone to confirm fitment.
| Brand | Rated HP | Stroke | Model / Serial Conditions | Replacement References |
|---|---|---|---|---|
| Johnson | 4 HP | 4-Stroke | Selected models; verify model, year, and serial number | 5033371, 5037518 |
| Johnson | 5 HP | 4-Stroke | Selected models; verify model, year, and serial number | 5033371, 5037518 |
| Johnson | 6 HP | 4-Stroke | Selected models; verify model, year, and serial number | 5033371, 5037518 |
Technical Specs
- Product Type
- Fuel pump
- Installation
- Replacement component
- Application
- Selected Johnson 4-stroke outboard engines
- Rated Horsepower
- 4 HP, 5 HP, and 6 HP
- Fuel Type
- Gasoline
- Pump Design
- Mechanical, pulse-operated diaphragm pump
- Package Type
- Single fuel pump component
What’s in the Box
- 1 x Fuel pump
Seals, hose clamps, hoses, mounting hardware, and installation instructions are not confirmed as included. Reuse or replace these items only as specified by the engine manufacturer and as required by the condition of the original parts.
Installation Notes
- Confirm the replacement part number and engine application before beginning work.
- Turn the engine off, allow it to cool, and work in a well-ventilated area away from sparks and open flames.
- Follow the engine manufacturer’s procedure for disconnecting the fuel system and prepare for possible fuel spillage.
- Mark the fuel-line and pulse-line routing before removing the original pump.
- Disconnect the fuel lines and pulse connection, then remove the original pump according to the service manual.
- Inspect the mounting surface, hoses, clamps, and sealing surfaces. Replace damaged or hardened components as required.
- Install the replacement pump in the correct orientation and secure it using the manufacturer’s specified procedure and torque.
- Reconnect all lines to the correct ports and secure the connections appropriately.
- Prime the fuel system if required by the engine manufacturer.
- Inspect all connections for leaks before starting the engine, then recheck for leaks and proper operation after startup.
Troubleshooting & FAQ
What symptoms can indicate a failing fuel pump?
Possible symptoms include hard starting, stalling, loss of power, poor acceleration, fuel starvation, or inconsistent engine operation. These symptoms can also be caused by restricted fuel lines, a blocked filter, air leaks, contaminated fuel, or ignition problems, so diagnose the complete fuel system before replacing the pump.
Does this pump fit every Johnson 4 HP, 5 HP, or 6 HP outboard?
No universal fitment should be assumed from horsepower alone. This product is identified for selected Johnson four-stroke models. Confirm the original part number, model, year, serial-number range, mounting arrangement, and hose connections before ordering.
Is this a complete installation kit?
No. This listing is for one replacement fuel pump component. Seals, clamps, hoses, mounting hardware, and other installation parts are not confirmed as included.
Are Yamaha or Suzuki models covered by this listing?
Those applications are not established by the available product record for this part. Do not assume cross-brand compatibility without a verified manufacturer part-number or application match.
Can I install the pump myself?
Installation may be suitable for a qualified technician or an experienced owner following the correct service manual. Because the work involves gasoline and fuel-system connections, use appropriate fire-safety precautions and have the work completed professionally if you are unsure.
What is the replacement interval?
Mechanical fuel pumps generally do not have a universal replacement interval. Inspect the pump and related fuel-system components during routine maintenance and replace them when testing or operating symptoms indicate a problem.
Is this an OEM component?
This listing is for a replacement fuel pump, not a claim that the component is manufactured by Johnson. Johnson part numbers are provided as replacement-reference numbers for application identification.
Safety & Important Information
- Verify the original part number and complete engine application before purchase.
- Keep fuel away from heat, sparks, flames, and ignition sources.
- Do not operate the engine if any fuel leak is present.
- Use the engine manufacturer’s service manual for model-specific installation, testing, and torque procedures.
- Professional installation is recommended when fuel-system service experience is limited.
About Sea Sierra
- Marine Replacement Parts — We supply replacement components for a range of outboard and marine applications.
- Application-Focused Listings — Product references and fitment information are provided to help customers compare the replacement with the original part.
- Support for Product Matching — Always provide the engine model, year, serial number, and original part number when confirming application details.
Payment & Security
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