Fuel Pump – Fits Mercury/Mariner 4-Stroke 4HP, 5HP, 6HP Outboards (Replaces 803529T06, 803529T01, 803529T02, 803529T03)
Fuel Pump – Fits Mercury/Mariner 4-Stroke 4HP, 5HP, 6HP Outboards (Replaces 803529T06, 803529T01, 803529T02, 803529T03)

Fuel Pump – Fits Mercury/Mariner 4-Stroke 4HP, 5HP, 6HP Outboards (Replaces 803529T06, 803529T01, 803529T02, 803529T03)

Vendor: JLM Marine
Availability: In Stock
Product Type: Fuel Pump
$19.99
$23.00
$19.99
Subtotal: $19.99

Free Shipping

Free standard shipping on all orders under 1 KG

Worry-Free Returns

Learn More.
Fuel Pump – Fits Mercury/Mariner 4-Stroke 4HP, 5HP, 6HP Outboards (Replaces 803529T06, 803529T01, 803529T02, 803529T03)

Fuel Pump – Fits Mercury/Mariner 4-Stroke 4HP, 5HP, 6HP Outboards (Replaces 803529T06, 803529T01, 803529T02, 803529T03)

$23.00 $19.99
Fuel Pump – Fits Mercury/Mariner 4-Stroke 4HP, 5HP, 6HP Outboards (Replaces 803529T06, 803529T01, 803529T02, 803529T03)

Fuel Pump – Fits Mercury/Mariner 4-Stroke 4HP, 5HP, 6HP Outboards (Replaces 803529T06, 803529T01, 803529T02, 803529T03)

$23.00 $19.99
Description

Fuel Pump – Fits Mercury/Mariner 4-Stroke 4HP, 5HP, 6HP Outboards

This fuel pump is designed to fit Mercury/Mariner 4HP, 5HP, and 6HP 4-stroke outboard engines. It serves as a reliable aftermarket replacement for your original fuel pump, ensuring proper fuel delivery and engine performance.

This component directly replaces OEM part numbers, including Mercury/Mariner 803529T06, 803529T01, 803529T02, 803529T03, and Tohatsu 3H6-04000-7.

  • Installation: Direct OEM Replacement
  • Compatibility: Fits Mercury, Mariner, and Tohatsu 4-Stroke models (4HP, 5HP, 6HP)
  • Fuel Type: Designed for use with Gasoline

Part Number Cross-Reference

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

Brand Part Number
Mercury/Mariner 803529T06
Mercury/Mariner 803529T01
Mercury/Mariner 803529T02
Mercury/Mariner 803529T03
Tohatsu 3H6-04000-7

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.

Brand Model Rated HP Stroke OEM Part No.
Mercury 4HP 4 4-Stroke 803529T06, 803529T01, 803529T02, 803529T03
Mercury 5HP 5 4-Stroke 803529T06, 803529T01, 803529T02, 803529T03
Mercury 6HP 6 4-Stroke 803529T06, 803529T01, 803529T02, 803529T03
Mariner 4HP 4 4-Stroke 803529T06, 803529T01, 803529T02, 803529T03
Mariner 5HP 5 4-Stroke 803529T06, 803529T01, 803529T02, 803529T03
Mariner 6HP 6 4-Stroke 803529T06, 803529T01, 803529T02, 803529T03
Tohatsu 4 4-Stroke 3H6-04000-7
Tohatsu 5 4-Stroke 3H6-04000-7
Tohatsu 6 4-Stroke 3H6-04000-7

Technical Specifications

Specification Value
Product Type Mechanical Fuel Pump
Installation Direct OEM Replacement
Fuel Type Gasoline
Connection Hose Barb
Housing Material Plastic, Metal
Housing Color Black
Fitting Type Vehicle Specific Fit
Warranty Varies by seller (typically 30-day return, 6-month warranty)
Other Technical Attributes Mechanical operation

Package Contents

  • 1 x Fuel Pump (Replaces 803529T06 / 803529T01 / 803529T02 / 803529T03)

Installation Guide

  1. Disconnect the battery to prevent electrical hazards.
  2. Locate the existing fuel pump on the engine block.
  3. Place a rag or container underneath the pump to catch any spilled fuel.
  4. Carefully disconnect the fuel lines from the pump. Note their orientation.
  5. Unbolt and remove the old fuel pump from the engine.
  6. Clean the mounting surface to ensure a proper seal.
  7. Install the new fuel pump, ensuring it is correctly seated.
  8. Securely fasten the mounting bolts to the manufacturer's specified torque.
  9. Reconnect the fuel lines to the correct ports on the new pump.
  10. Reconnect the battery.
  11. Prime the fuel system if necessary and check for any leaks before starting the engine.

Troubleshooting & FAQ

Q: How do I know if this fuel pump fits my outboard?

A: This pump is designed for Mercury, Mariner, and Tohatsu 4-stroke outboards in the 4HP, 5HP, and 6HP range. Check the "Compatible Engine Models" and "Part Number Cross-Reference" tables to confirm it matches your specific engine and original part number (e.g., 803529T06, 3H6-04000-7).

Q: What are the symptoms of a failing fuel pump?

A: Common signs include the engine failing to start, sputtering or losing power at high speeds, stalling, or surging unexpectedly.

Q: Is this a mechanical or electric fuel pump?

A: This is a mechanical fuel pump, driven by the engine's internal components.

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

We can ship to virtually any address in the world with free shipping available for most regions.

For our typical US and Canadian customers , our shipping timeframes are as follows:

  • Amazon FBA: orders will be delivered within 1-5 business days after placing the order (during certain special periods such as major promotions, Christmas, etc., the delivery time of Amazon FBA may be affected).
  • US warehouse shipment: orders will be delivered within 5 days after placing the order.
  • China warehouse shipment: orders will be delivered about 12 days after placing the order.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

About JLM Marine

Founded in 2002, JLM Marine has established itself as a dedicated manufacturer of high-quality marine parts, based in China. Our commitment to excellence in manufacturing has earned us the trust of top marine brands globally.

As a direct supplier, we bypass intermediaries, which allows us to offer competitive prices without compromising on quality. This approach not only supports cost-efficiency but also ensures that our customers receive the best value directly from the source.

We are excited to expand our reach through retail channels, bringing our expertise and commitment to quality directly to boat owners and enthusiasts worldwide.

Recently Viewed Products