Mercury EFI Engine Control Unit ECU | OEM 8M0059787 | Fits Mercury & Mariner 30 40 50 60 HP 4-Stroke EFI Outboards | 1-Year Warranty

Product Overview

Restore factory engine performance with this genuine OEM Mercury EFI Engine Control Unit (ECU), designed for Mercury and Mariner 30, 40, 50, and 60 HP 4-Stroke EFI outboards. This factory ECU has been professionally tested on a running engine and verified with a CDI diagnostic tester to ensure dependable operation before shipment. Removed from a freshwater donor engine, this ECU has 916 verified engine hours and is in perfect working condition. A CDI diagnostic report is included with your purchase for added confidence. Ready to install and backed by a 1-Year Working Warranty, this OEM module is an ideal replacement for a faulty or damaged ECU.

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Key Features

• Genuine OEM Mercury EFI Engine Control Unit (ECU)
• Fits Mercury & Mariner 30, 40, 50 & 60 HP 4-Stroke EFI outboards
• Professionally tested on a running engine
• CDI diagnostic report included
• 916 verified engine hours
• Ready to install
• Genuine Mercury OEM electronics
• Backed by a 1-Year Working Warranty

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Technical Specifications

Specification	Details
Brand	Mercury
Product Type	Engine Control Unit (ECU)
Condition	Used – Tested Good
OEM Part Number	8M0059787
Stamped Number	8M0059302
Preceded By	8M0049011, 8M0045720
Engine Type	4-Stroke EFI
Horsepower	30 HP, 40 HP, 50 HP, 60 HP

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OEM Part Numbers

Primary Part Number

• 8M0059787

Preceded By

• 8M0049011
• 8M0045720

Stamped Number

• 8M0059302

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Compatible Applications

Designed for select Mercury and Mariner outboards including: Horsepower

• 30 HP
• 40 HP
• 50 HP
• 60 HP

Engine Type

• Mercury 4-Stroke EFI
• Mariner 4-Stroke EFI

Donor Engine

• Model: 1A51453KZ
• Serial Number: 1C173752

Important: Always verify compatibility using your engine's serial number and OEM part number before purchasing. If you need assistance confirming fitment, contact EZ Boats Marine and we'll be happy to help.

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Condition

This Mercury EFI ECU has been professionally inspected and tested and is in excellent used condition. Inspection highlights include:

• Tested successfully on a running engine
• CDI diagnostic report included
• 916 verified engine hours
• Perfect working condition
• Ready for installation

Please review all product photos carefully before purchasing.

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What's Included

Your purchase includes:

• OEM Mercury EFI Engine Control Unit (ECU)
• CDI Diagnostic Test Report

Only the components shown in the product photos are included.

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Shipping Information

Your ECU will be carefully packaged to protect sensitive electronic components during shipping. We offer fast shipping throughout the United States, with international shipping available upon request. For an accurate shipping quote, please provide:

• Country
• ZIP or Postal Code
• Residential or Commercial Address
• Whether liftgate service is required

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Why Buy from EZ Boats Marine?

• Genuine OEM Mercury Marine Parts
• Professionally Tested Electronics
• CDI Diagnostic Report Included
• 1-Year Working Warranty
• Honest Condition Descriptions
• Fast Nationwide & International Shipping
• Secure Packaging
• Experienced Marine Parts Specialists
• Dedicated Customer Support

EZ Boats Marine is committed to supplying quality OEM marine parts backed by expert service and dependable support.

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Frequently Asked Questions

Is this a genuine Mercury ECU?

Yes. This is an original OEM Mercury Engine Control Unit manufactured by Mercury Marine.

Has this ECU been tested?

Yes. It has been tested on a running engine and verified using a CDI diagnostic tester. A CDI report showing 916 engine hours is included with your purchase.

Which engines does it fit?

This ECU fits select Mercury and Mariner 30, 40, 50, and 60 HP 4-Stroke EFI outboards. Always verify compatibility using your engine's serial number and OEM part number before ordering.

Is this covered by a warranty?

Yes. This ECU is backed by a 1-Year Working Warranty. If it fails during normal use, EZ Boats Marine will replace it or provide a refund if a replacement is unavailable.

Can EZ Boats Marine verify fitment?

Absolutely. Simply send us your Mercury engine's model and serial number, and we'll confirm whether this OEM 8M0059787 Engine Control Unit is the correct fit before you purchase.