Fuel Pump – Fits Tohatsu/Nissan MFS/NSF 4-9.8 HP & Mercury/Mariner 4-6 HP 4-Stroke (Replaces 3H6-04000-7)
Fuel Pump – Fits Tohatsu/Nissan MFS/NSF 4-9.8 HP & Mercury/Mariner 4-6 HP 4-Stroke (Replaces 3H6-04000-7)

Fuel Pump – Fits Tohatsu/Nissan MFS/NSF 4-9.8 HP & Mercury/Mariner 4-6 HP 4-Stroke (Replaces 3H6-04000-7)

Vendor: JLM Marine
Availability: In Stock
Product Type: Fuel Pump
$28.40
$34.00
$28.40
Subtotal: $28.40

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Fuel Pump – Fits Tohatsu/Nissan MFS/NSF 4-9.8 HP & Mercury/Mariner 4-6 HP 4-Stroke (Replaces 3H6-04000-7)

Fuel Pump – Fits Tohatsu/Nissan MFS/NSF 4-9.8 HP & Mercury/Mariner 4-6 HP 4-Stroke (Replaces 3H6-04000-7)

$34.00 $28.40
Fuel Pump – Fits Tohatsu/Nissan MFS/NSF 4-9.8 HP & Mercury/Mariner 4-6 HP 4-Stroke (Replaces 3H6-04000-7)

Fuel Pump – Fits Tohatsu/Nissan MFS/NSF 4-9.8 HP & Mercury/Mariner 4-6 HP 4-Stroke (Replaces 3H6-04000-7)

$34.00 $28.40
Descripción

Fuel Pump – Fits Tohatsu/Nissan MFS/NSF 4-9.8 HP & Mercury/Mariner 4-6 HP 4-Stroke

This aftermarket fuel pump assembly is designed for a precise fit on a range of Tohatsu, Nissan, Mercury, and Mariner 4-stroke outboard motors. It serves as a direct replacement for engines from 4 HP to 9.8 HP, ensuring reliable fuel delivery and restoring engine performance.

This part replaces multiple OEM part numbers, including Tohatsu/Nissan 3H6-04000-7 and Mercury/Mariner 803529T06. Please verify the part number cross-reference and compatible models list to ensure correct fitment for your specific engine.

  • Installation Method: Direct OEM-style replacement.
  • Compatible Fuel Type: Gasoline.
  • Package Includes: 1 x Fuel Pump Assembly.

Part Number Cross-Reference

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

Brand Part Number Superseded By
Tohatsu/Nissan 3H6-04000-0 3H6-04000-7
Tohatsu/Nissan 3H6-04000-1 3H6-04000-7
Tohatsu/Nissan 3H6-04000-2 3H6-04000-7
Tohatsu/Nissan 3H6-04000-3 3H6-04000-7
Tohatsu/Nissan 3H6-04000-4 3H6-04000-7
Tohatsu/Nissan 3H6-04000-5 3H6-04000-7
Tohatsu/Nissan 3H6-04000-6 3H6-04000-7
Tohatsu/Nissan 3H6-04000-7 -
Mercury/Mariner 803529T01 803529T06
Mercury/Mariner 803529T02 803529T06
Mercury/Mariner 803529T03 803529T06
Mercury/Mariner 803529T06 -

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.

Tohatsu/Nissan

Brand Model Rated HP Stroke Years OEM Part No. Notes
Tohatsu MFS4A2 4 4-Stroke 3H6-04000-7 Supersedes 3H6-04000-0 through 3H6-04000-6
Tohatsu MFS4B 4 4-Stroke 3H6-04000-7 Supersedes 3H6-04000-0 through 3H6-04000-6
Tohatsu MFS4C 4 4-Stroke 2011-2014 3H6-04000-7 Supersedes 3H6-04000-0 through 3H6-04000-6
Tohatsu MFS5A2 5 4-Stroke 3H6-04000-7 Supersedes 3H6-04000-0 through 3H6-04000-6
Tohatsu MFS5B 5 4-Stroke 3H6-04000-7 Supersedes 3H6-04000-0 through 3H6-04000-6
Tohatsu MFS5C 5 4-Stroke 2011-2014 3H6-04000-7 Supersedes 3H6-04000-0 through 3H6-04000-6
Tohatsu MFS6A2 6 4-Stroke 3H6-04000-7 Supersedes 3H6-04000-0 through 3H6-04000-6
Tohatsu MFS6B 6 4-Stroke 3H6-04000-7 Supersedes 3H6-04000-0 through 3H6-04000-6
Tohatsu MFS6C 6 4-Stroke 2011-2014 3H6-04000-7 Supersedes 3H6-04000-0 through 3H6-04000-6
Tohatsu MFS8A 8 4-Stroke 3H6-04000-7 Supersedes 3H6-04000-0 through 3H6-04000-6
Tohatsu MFS8A2 8 4-Stroke 3H6-04000-7 Supersedes 3H6-04000-0 through 3H6-04000-6
Tohatsu MFS8A3 8 4-Stroke 2006-2014 3H6-04000-7 Supersedes 3H6-04000-0 through 3H6-04000-6
Tohatsu MFS9.8A 9.8 4-Stroke 3H6-04000-7 Supersedes 3H6-04000-0 through 3H6-04000-6
Tohatsu MFS9.8A2 9.8 4-Stroke 3H6-04000-7 Supersedes 3H6-04000-0 through 3H6-04000-6
Tohatsu MFS9.8A3 9.8 4-Stroke 2006-2014 3H6-04000-7 Supersedes 3H6-04000-0 through 3H6-04000-6
Nissan NSF4A2 4 4-Stroke 3H6-04000-7 Supersedes 3H6-04000-0 through 3H6-04000-6
Nissan NSF4B 4 4-Stroke 3H6-04000-7 Supersedes 3H6-04000-0 through 3H6-04000-6
Nissan NSF4C 4 4-Stroke 2011-2014 3H6-04000-7 Supersedes 3H6-04000-0 through 3H6-04000-6
Nissan NSF5A2 5 4-Stroke 3H6-04000-7 Supersedes 3H6-04000-0 through 3H6-04000-6
Nissan NSF5B 5 4-Stroke 3H6-04000-7 Supersedes 3H6-04000-0 through 3H6-04000-6
Nissan NSF5C 5 4-Stroke 2011-2014 3H6-04000-7 Supersedes 3H6-04000-0 through 3H6-04000-6
Nissan NSF6A2 6 4-Stroke 3H6-04000-7 Supersedes 3H6-04000-0 through 3H6-04000-6
Nissan NSF6B 6 4-Stroke 3H6-04000-7 Supersedes 3H6-04000-0 through 3H6-04000-6
Nissan NSF6C 6 4-Stroke 2011-2014 3H6-04000-7 Supersedes 3H6-04000-0 through 3H6-04000-6
Nissan NSF8A 8 4-Stroke 3H6-04000-7 Supersedes 3H6-04000-0 through 3H6-04000-6
Nissan NSF8A2 8 4-Stroke 3H6-04000-7 Supersedes 3H6-04000-0 through 3H6-04000-6
Nissan NSF8A3 8 4-Stroke 2006-2014 3H6-04000-7 Supersedes 3H6-04000-0 through 3H6-04000-6
Nissan NSF9.8A 9.8 4-Stroke 3H6-04000-7 Supersedes 3H6-04000-0 through 3H6-04000-6
Nissan NSF9.8A2 9.8 4-Stroke 3H6-04000-7 Supersedes 3H6-04000-0 through 3H6-04000-6
Nissan NSF9.8A3 9.8 4-Stroke 2006-2014 3H6-04000-7 Supersedes 3H6-04000-0 through 3H6-04000-6

Mercury/Mariner

Brand Rated HP Stroke OEM Part No. Notes
Mercury 4 4-Stroke 803529T06 Also listed as 803529T01, 803529T02, 803529T03
Mercury 5 4-Stroke 803529T06 Also listed as 803529T01, 803529T02, 803529T03
Mercury 6 4-Stroke 803529T06 Also listed as 803529T01, 803529T02, 803529T03
Mariner 4 4-Stroke 803529T06 Also listed as 803529T01, 803529T02, 803529T03
Mariner 5 4-Stroke 803529T06 Also listed as 803529T01, 803529T02, 803529T03
Mariner 6 4-Stroke 803529T06 Also listed as 803529T01, 803529T02, 803529T03

Technical Specifications

Specification Value
Product Type Fuel Pump Assembly
Installation Direct OEM Replacement
Fuel Type Gasoline
Connection Hose Barb
Housing Material Alloy/Plastic
Housing Color Black/Silver
Fitting Type Hose Barb
Warranty 1 Year (Aftermarket)
Production Standard ISO9002 certified factory

Package Contents

  • 1 x Fuel Pump Assembly (Replaces 3H6-04000-7)

Installation Guide

  1. Safety First: Disconnect the battery and ensure the engine is cool. Work in a well-ventilated area away from open flames or sparks.
  2. Relieve Fuel Pressure: Safely relieve the pressure from the fuel system according to your engine's service manual to prevent fuel spray.
  3. Disconnect Fuel Lines: Place a rag under the fuel pump to catch any residual fuel. Carefully disconnect the inlet and outlet fuel lines from the pump.
  4. Remove Old Pump: Unscrew the mounting bolts holding the fuel pump to the engine block.
  5. Install New Pump: Position the new fuel pump and secure it with the mounting bolts, tightening them to the manufacturer's specified torque.
  6. Reconnect Fuel Lines: Attach the fuel lines to the new pump, ensuring a secure connection to prevent leaks.
  7. Prime and Test: Reconnect the battery. Prime the fuel system by squeezing the primer bulb until firm. Start the engine and carefully inspect for any fuel leaks around the pump and connections.

Troubleshooting & FAQ

Q: How can I confirm this fuel pump fits my specific engine?
A: The best way is to match your original part number to one of the numbers in our "Part Number Cross-Reference" table. Additionally, check your engine's model and year against the "Compatible Engine Models" list. If you're unsure, use the provided guides for Mercury to find your serial number or consult a parts diagram.

Q: What are the common signs of a failing fuel pump?
A: Symptoms of a faulty fuel pump include the engine sputtering or surging, bogging down under acceleration, difficulty starting, or a complete loss of power. These issues occur when the pump can no longer supply the carburetor with a consistent and adequate flow of fuel.

Q: Why are there so many superseded part numbers for this pump?
A: Manufacturers often update part designs over time for improved durability, material changes, or minor functional enhancements. A new part number (e.g., 3H6-04000-7) supersedes the older versions, meaning it is the current and correct replacement for all previous iterations.

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.
Envío

Podemos enviar a prácticamente cualquier dirección del mundo con envío gratuito disponible para la mayoría de las regiones.

Para nuestros clientes típicos de EE. UU. y Canadá , nuestros plazos de envío son los siguientes:

  • Amazon FBA : los pedidos se entregarán dentro de 1-5 días hábiles después de realizar el pedido (durante ciertos períodos especiales como promociones importantes, Navidad, etc., el tiempo de entrega de Amazon FBA puede verse afectado).
  • Envío al almacén de EE. UU .: los pedidos se entregarán dentro de los 7 días posteriores a la realización del pedido.
  • Envío al almacén de China : los pedidos se entregarán aproximadamente 12 días después de realizar el pedido.

Al realizar un pedido, estimaremos las fechas de envío y entrega según la disponibilidad de sus artículos y las opciones de envío que elija. Dependiendo del proveedor de envío que elija, las fechas de envío estimadas podrían aparecer en la página de presupuestos de envío.

Tenga en cuenta también que las tarifas de envío de muchos de los artículos que vendemos se basan en el peso. Puede consultar el peso de cada artículo en su página de detalles. Para reflejar las políticas de las empresas de envío que utilizamos, todos los pesos se redondearán a la libra superior.

Acerca de JLM Marine

Fundada en 2002, JLM Marine se ha consolidado como un fabricante dedicado de piezas marinas de alta calidad, con sede en China. Nuestro compromiso con la excelencia en la fabricación nos ha ganado la confianza de las principales marcas marinas a nivel mundial.

Como proveedor directo, evitamos intermediarios, lo que nos permite ofrecer precios competitivos sin comprometer la calidad. Este enfoque no solo promueve la rentabilidad, sino que también garantiza que nuestros clientes reciban el mejor valor directamente del proveedor.

Estamos entusiasmados de ampliar nuestro alcance a través de canales minoristas, llevando nuestra experiencia y compromiso con la calidad directamente a los propietarios de embarcaciones y entusiastas de todo el mundo.

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