Mercury EFI ECU Set | Fuel ECM 83004612T & Ignition ECM 83004417T | Fits 1998–2001 Mercury 225HP & 250HP 3.0L EFI V6 | 1-Year Warranty

Product Overview

Restore reliable engine management with this genuine Mercury EFI ECU Set, featuring Fuel ECM Part Number 83004612T and Ignition ECM Part Number 83004417T. Designed for select 1998–2001 Mercury 225HP and 250HP 3.0L EFI V6 outboard engines, this complete OEM two-module set controls both fuel management and ignition functions to ensure proper engine performance. Unlike individual modules, these ECUs are designed to operate together as a matched system, making this complete set an ideal replacement when repairing or restoring your Mercury EFI outboard. Removed from a freshwater engine and professionally inspected, both modules are ready for installation and are backed by a 1-Year Warranty for added peace of mind.

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Key Features

• Genuine OEM Mercury EFI ECU Set
• Complete Fuel & Ignition Control Modules
• Fuel ECM Part Number: 83004612T
• Ignition ECM Part Number: 83004417T
• Designed to Operate as a Matched Pair
• Freshwater Component
• Professionally Inspected
• Ready for Installation
• 1-Year Warranty Included

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Technical Specifications

Specification	Details
Brand	Mercury
Product Type	Fuel & Ignition ECU Set
Condition	Pre-Owned
Engine Type	3.0L EFI V6
Horsepower	225 HP / 250 HP
Model Years	1998–2001

Fuel ECM

• OEM Part Number: 83004612T
• Supersedes:
  • 83004612S
  • 83004612

Ignition ECM / CDI

• OEM Part Number: 83004417T
• Supersedes:
  • 83004417S
  • 83004417

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Compatible Applications

Designed for select Mercury EFI outboard engines including: Model Years

• 1998
• 1999
• 2000
• 2001

Engine

• 3.0L EFI V6

Horsepower

• 225 HP
• 250 HP

Donor Engine Serial Number

• 0T398063

Important: Always verify your engine model, serial number, and OEM part numbers before purchasing. If you need assistance confirming compatibility, our team is happy to help.

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Condition

This is a genuine OEM Mercury EFI ECU set in excellent used condition. Before being offered for sale, both modules were professionally inspected and found to be suitable for installation. Inspection includes:

• Removed from a freshwater engine
• Complete two-module set
• Clean housings with no cracks or structural damage
• Normal cosmetic wear consistent with previous use
• One connector has minor physical damage that does not affect performance or operation
• Ready for installation

Because both modules work together as a system, they are sold as a complete matched set.

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What's Included

Your purchase includes:

• Mercury Fuel ECM (83004612T)
• Mercury Ignition ECM / CDI (83004417T)

Only the components shown in the product photos are included.

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Shipping Information

Every ECU set is carefully packaged to protect sensitive electronic components during transit. We offer secure shipping throughout the United States, with international shipping available upon request. For an accurate shipping quote, please provide:

• Country
• ZIP or Postal Code
• Commercial or Residential Address

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Warranty

This Mercury EFI ECU set is backed by a 1-Year Warranty. If either module experiences a covered failure during normal operation within the warranty period, EZ Boats Marine will repair, replace, or refund the item if a replacement is unavailable, in accordance with our warranty policy.

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Why Buy from EZ Boats Marine?

• Genuine OEM Mercury Marine Parts
• Complete Matched ECU Sets
• Professionally Inspected Components
• Freshwater Parts When Available
• 1-Year Warranty Included
• Secure Packaging
• Fast Nationwide and International Shipping
• Competitive Pricing
• Knowledgeable Customer Support

EZ Boats Marine is committed to providing dependable OEM marine parts backed by exceptional service and technical expertise.

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Frequently Asked Questions

Which engines does this ECU set fit?

This complete ECU set is designed for select 1998–2001 Mercury 225HP and 250HP 3.0L EFI V6 outboard engines. Always verify your engine's model number, serial number, and OEM part numbers before ordering.

Why are both modules sold together?

The Fuel ECM and Ignition ECM are designed to work together as a matched system. Replacing both modules helps ensure proper engine operation and compatibility.

Has this ECU set been inspected?

Yes. Both modules have been professionally inspected, removed from a freshwater engine, and confirmed to have no cracked housings or structural damage.

Does the damaged connector affect performance?

One connector has minor physical damage; however, it does not affect the performance or functionality of the ECU set.

Does this ECU set include a warranty?

Yes. This complete Mercury EFI ECU set is backed by a 1-Year Warranty for added confidence with your purchase.