SKU: 30904906506

Fuel Pump – Fits Mercury/Tohatsu/Nissan 9.9-30 HP & Johnson/Evinrude 15 HP (Replaces 803529T04, 3H8-04000-1)

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Description

Fuel Pump – Fits Mercury/Tohatsu/Nissan 9.9-30 HP & Johnson/Evinrude 15 HP (Replaces 803529T04, 3H8-04000-1)Fuel Pump Assembly Fits Mercury Tohatsu Nissan 9. 9 30 HP & Johnson Evinrude 15 HP This pulse driven mechanical fuel pump is a reliable aftermarket replacement for a wide range of outboard motors, including 4 stroke models from Mercury Mariner (9. 9 30 HP, 2005present) and Tohatsu Nissan (9. 9 30 HP, 20022018). It also offers limited compatibility with select Johnson Evinrude 15 HP 2 stroke models. Engineered to meet or exceed OEM specifications, this

Fuel Pump Assembly – Fits Mercury/Tohatsu/Nissan 9.9-30 HP & Johnson/Evinrude 15 HP

This pulse-driven mechanical fuel pump is a reliable aftermarket replacement for a wide range of outboard motors, including 4-stroke models from Mercury/Mariner (9.9-30 HP, 2005–present) and Tohatsu/Nissan (9.9-30 HP, 2002–2018). It also offers limited compatibility with select Johnson/Evinrude 15 HP 2-stroke models.

Engineered to meet or exceed OEM specifications, this pump ensures consistent fuel delivery for optimal engine performance. It serves as a direct replacement for Mercury part 803529T04, Tohatsu/Nissan part 3H8-04000-1, and Johnson/Evinrude part 5041064.

  • Installation: Mounts easily with a standard two-bolt system.
  • Fuel System: Compatible with standard marine gasoline.
  • Complete Kit: Includes the fuel pump, O-ring, and spring clamps for a full replacement.

Part Number Cross-Reference

Use this table to confirm equivalent part numbers across OEM and aftermarket brands.

Brand Part Number Notes
Mercury/Mariner 803529T04 Replaces 803529A04
Tohatsu/Nissan 3H8-04000-1 Also known as 3H8040001, 3H8040001M
Johnson/Evinrude 5041064 Limited compatibility

Compatible Engine Models

Confirm your engine model/year in the table below. For Mercury owners, here’s a guide to help you identify your engine’s serial/model: Mercury Serial Number Guide. You can also review exploded diagrams to verify part numbers: Mercury Parts Diagrams & Catalog.

Confirm your engine model/year in the table below. For Johnson/Evinrude owners, here’s a guide to help you identify your engine’s serial/model: Johnson Serial Number Guide.

Confirm your engine model/year in the table below.

Mercury/Mariner

Brand Model Rated HP Stroke Years OEM Part No. Notes
Mercury Various 4-Stroke 9.9 4-Stroke 2005–Present 803529T04 Replaces 803529A04
Mercury Various 4-Stroke 15 4-Stroke 2005–Present 803529T04 Replaces 803529A04
Mercury Various 4-Stroke 20 4-Stroke 2005–Present 803529T04 Replaces 803529A04
Mercury Various 4-Stroke 25 4-Stroke 2005–Present 803529T04 Replaces 803529A04
Mercury Various 4-Stroke 30 4-Stroke 2005–Present 803529T04 Replaces 803529A04

Tohatsu/Nissan

Brand Model Rated HP Stroke Years OEM Part No. Notes
Tohatsu MFS9.9E EFI 9.9 4-Stroke 2017-2018 3H8-04000-1 Fuel Pump
Tohatsu MFS9.9B, MFS9.9B2 9.9 4-Stroke 2002-2004 3H8-04000-1 Inlet Manifold, Fuel Pump
Tohatsu MFS15E EFI 15 4-Stroke 2017-2018 3H8-04000-1 Fuel Pump
Tohatsu MFS15B, MFS15B2, MFS15C 15 4-Stroke 2002-2012 3H8-04000-1 Inlet Manifold, Fuel Pump
Tohatsu MFS20E EFI 20 4-Stroke 2017-2018 3H8-04000-1 Fuel Pump
Tohatsu MFS20C, MFS20D 20 4-Stroke 2011-2016 3H8-04000-1 Inlet Manifold, Fuel Pump
Tohatsu MFS25A 25 4-Stroke 2002-2005 3H8-04000-1 Inlet Manifold, Fuel Pump
Tohatsu MFS25B 25 4-Stroke 2006-2014 3H8-04000-1 Fuel Pump, Fuel Rail & Vapor Separator
Tohatsu MFS25C 25 4-Stroke 2015-2018 3H8-04000-1 Fuel System
Tohatsu MFS30A 30 4-Stroke 2002-2005 3H8-04000-1 Inlet Manifold, Fuel Pump
Tohatsu MFS30B 30 4-Stroke 2005-2014 3H8-04000-1 Fuel Pump, Fuel Rail & Vapor Separator
Tohatsu MFS30C 30 4-Stroke 2015-2018 3H8-04000-1 Fuel System
Nissan NSF9.9B, NSF9.9B2 9.9 4-Stroke 2002-2004 3H8-04000-1 Inlet Manifold, Fuel Pump
Nissan NSF15B, NSF15B2, NSF15C 15 4-Stroke 2002-2013 3H8-04000-1 Inlet Manifold, Fuel Pump
Nissan NSF20C 20 4-Stroke 2008 3H8-04000-1 Inlet Manifold, Fuel Pump
Nissan NSF25A 25 4-Stroke 2002-2005 3H8-04000-1 Inlet Manifold, Fuel Pump
Nissan NSF25B 25 4-Stroke 2006-2014 3H8-04000-1 Fuel Pump, Fuel Rail & Vapor Separator
Nissan NSF30A 30 4-Stroke 2002-2005 3H8-04000-1 Inlet Manifold, Fuel Pump
Nissan NSF30B 30 4-Stroke 2005-2014 3H8-04000-1 Fuel Pump, Fuel Rail & Vapor Separator

Johnson/Evinrude

Brand Model Rated HP Stroke Years OEM Part No. Notes
Johnson Various Models 15 2-Stroke 1993-2007 5041064 Limited compatibility
Evinrude Various Models 15 2-Stroke 1993-2007 5041064 Limited compatibility

Technical Specifications

Product Type Mechanical Fuel Pump
Installation Two-bolt mounting system
Fuel Type Gasoline
Connection Hose barb fittings
Housing Material Corrosion-resistant metal and plastic
Housing Color Black/Silver
Dimensions Approximately 89 × 76 × 38 mm (3.5 × 3.0 × 1.5 inches)
Weight 0.07 kg (0.15 lbs)
Fitting Type Hose Barb
Working Pressure Meets OEM specifications
Operating Temperature -20 to 80°C (-4 to 176°F)
Other Technical Attributes Pulse-driven mechanical pump

Package Contents

  • 1x Fuel Pump Assembly (803529T04/3H8-04000-1)
  • 1x O-Ring
  • 2x Metal Spring Clamps

Installation Guide

  1. Safety First: Disconnect the battery and ensure the engine is cool. Work in a well-ventilated area and have a fire extinguisher nearby.
  2. Locate Pump: Identify the existing fuel pump on the engine block.
  3. Disconnect Lines: Place a rag under the pump to catch fuel. Carefully disconnect the inlet and outlet fuel lines, noting their orientation.
  4. Remove Old Pump: Unbolt the two mounting bolts holding the pump in place and remove the pump and old O-ring/gasket.
  5. Install New Pump: Clean the mounting surface on the engine. Place the new O-ring and install the new fuel pump, tightening the bolts evenly.
  6. Reconnect Lines: Attach the fuel lines to the correct fittings on the new pump and secure them with the provided spring clamps.
  7. Test for Leaks: Reconnect the battery. Prime the fuel system if necessary and check thoroughly for any fuel leaks around the pump and fittings before starting the engine.

Troubleshooting & FAQ

Q: How do I confirm this pump fits my specific engine model?

A: The best way is to match your existing part number to the ones listed in our cross-reference table (803529T04, 3H8-04000-1, 5041064). Additionally, review the compatible engine model tables on this page to ensure your engine's make, HP, and year range are listed.

Q: What are common signs that my fuel pump is failing?

A: Common symptoms of a failing mechanical fuel pump include engine sputtering, loss of power especially at high speeds, difficulty starting, or stalling. You may also notice fuel leaking from the pump body itself.

Q: How often should I replace my fuel pump?

A: There is no fixed replacement interval, but fuel pumps are a critical wear item. Consider a replacement as part of preventative maintenance, especially on older engines or if you experience any performance issues.

Q: OEM vs. Aftermarket?

A: This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.

Q: How fast do you ship and how much does it cost?

A: We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.

Q: What is your warranty and return policy?

A: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused & in original condition); please see our policy page or reach out for instructions.

Important Notes

  • Verify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.
  • This product is an aftermarket replacement part and is not an OEM component.
  • Professional installation is recommended to ensure safety and optimal performance.

Why Choose JLM MARINE?

  • Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
  • Fast Global Shipping: Free delivery worldwide in 5–15 days.
  • Direct from Manufacturer: Competitive pricing without compromising quality.
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 30904906506

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Teacher of Teachers
Alexandria, US
★★★★★ 3
Impressive sources, sophomoric writing.
Format: Kindle
Should everyone read this book? Certainly. But the writing is too poor for me to offer an enthusiastic four or five star recommendation. I'm surprised an editor did not clean this up so that the book could live up to its eye-opening content. This already short book has quite a lot of distracting, repetitive padding. Symbolic of this is the use of the phrase "of course" - it appears thirty times. More repetition appears in the author's needless (and, I would say, presumptuous) dwelling on the reader's emotional reactions to the content of the book: the idea that America might have influenced the Nazis is "too awful to contemplate," and "is sure to seem distressing," and "hard to digest," and "no one wants to imagine" it, and "none of this is entirely easy to talk about," and "it is hard to look coolly on the question," and "it is hard to admit," and "no one wants to be perceived as relativizing," and "no non-Germans want their country to be accused," and "it is hard to overcome our sense that..." and "painful though it may be for us to admit..." and "awful it may be to contemplate," and "the story of American influence...is certainly depressing," and so on and so forth. Nevertheless, "To be sure, we must keep our composure..." This repetition gets exhausting in a single 56-word sentence invoking the phrases "true nefandum...abyss of unexampled modern horror...sui generis radical evil...a sort of dark star." More padding appears in the author's concern with arguing against weak positions: "We can, and should, reject the sort of simple-minded anti-Americanism..." "It would be a mistake to draw overblown conclusions..." Well, yes, simple-minded anything is to be rejected, as are overblown conclusions about anything. But that doesn't stop the author from presenting repetitive arguments. Additional filler that an editor should have excised is in the form of these phrases, which read like a student trying to hit a required word count in a term paper: "It is important to note that..." "In particular it is essential to emphasize..." "We must bear that fact in mind..." "It is an unpleasant truth that..." "Worthy of attention above all is..." "It is particularly noteworthy that..." "Sahm is a particularly noteworthy author..." Finally, the author descends into a kind of bullying that indicates a lack of confidence in his own presentation: "Our literature has taken a crass interpretative track." "It is a major interpretative fallacy on the part of all these scholars..."It would be foolish and craven to minimize Nazi interest in what American law represented." "It is essential to reject once and for all the proposition that American law could not have been of interest to the Nazis." "It is simply nonsense to claim..." "Once we dispose of that dubious claim..." "There can be no justification for ignoring the evidence..." "Only a naive and pedestrian understanding of law - only a dogged refusal to face facts..." An editor should have deleted these kinds of phrases and just let the content - the documenting of Nazi interest in America law - speak for itself. With all this rhetorical padding, the book is overpriced. Nevertheless it has value as a kind of annotated bibliography.
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Reviewed in the United States on October 14, 2017
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Ginger Witch
Grantham, US
★★★★★ 5
Thoughtful, well researched, not a "fun" read
Format: Hardcover
This was a very thoughtful look at a topic I didn't know much about. It talks about prewar anti race mixing laws and immigration laws in the USA and other laws used to strip rights from nonwhites in the USA and how those laws were studied by Nazis who wrote laws for the third reich and what they thought of each other. The author obviously put a lot of research and thought into this work but is careful not to jump to any conclusions. This book is very dense and as someone who is not a lawyer or anything, I could follow it but I had to read it more slowly than most other nonfiction books. Still very worth picking up if you are interested in the topic, though!
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Reviewed in the United States on July 16, 2018
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Ayisha
Whiting, US
★★★★★ 5
I really love the fact that he criticized President Obama for his ...
Format: Kindle
I must say, I am EXTREMELY biased towards Tim Wise. I adore him. He is a well-educated, genuine wordsmith. He shuts down the mess that we hear perpetrated on a daily basis regarding colorblind politics. In this book, he shuts down "colorblindness". I really love the fact that he criticized President Obama for his lack of legislation specifically for African-Americans. That was an issue I had with him and I believe that several African-Americans feel the same way. I understand, like Tim Wise, the position of President Obama and how easy it would have been for him to fall into a stereotype. I also believe that, no matter what he did, he will always be stereotyped, so why not help out the people who got you elected? Great book by a "Wise" man.
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Reviewed in the United States on April 10, 2017
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Jeff King
New York, US
★★★★★ 5
Insights on the new racism
Format: Paperback
Wise, with good insight and armed with up-to-date facts, compellingly portrays the new strategies that have been developed within the US political system that actually serve to perpetuate racism in our society. Scary and brutal--a must read for anyone who really wants to know how our society subtley and not so subtley pushes a White supremacy agenda without even knowing it.
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Reviewed in the United States on August 29, 2010
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Tina West
Grantham, US
★★★★★ 4
Enjoyed. I need to start ordering audio books because ...
Format: Paperback
Enjoyed. I need to start ordering audio books because of vision problems.
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Reviewed in the United States on February 2, 2016

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