MERCURY Engine Ecu 590-06744 138K LKQ452979052

( Part Type: Engine Ecu ), ( Oe/oem Part Number: 3u7a12a650edb 3u7a12a650edc 3u7aedb 3u7aedc 3u7z12a650edc 3w7a12a ), ( Ipn: 590-06744 ), ( Manufacturer Warranty: 6 Month ), ( Warranty Length: 6 Month Warranty ), ( Partout Id: A-129564723 )

Review MERCURY Engine Computer Ecu 138k Miles Oe fits MARQUIS GRAND 2003

The Mercury 590-06744 engine control unit (ECU) is a crucial component for the Marquis series engines manufactured by Mercury Marine in 2003. This ECU, with the part number LKQ452979052, plays a significant role in managing and controlling various engine functions to ensure optimal performance, reliability, and fuel efficiency.

This advanced electronic component measures approximately 7.4 inches long, 4.5 inches wide, and 2 inches high, making it a compact yet powerful addition to your engine system. Its sleek design and robust construction make it suitable for use in harsh marine environments, where it is subjected to frequent vibrations, temperature fluctuations, and exposure to water and corrosive substances.

The Mercury 590-06744 ECU integrates various sensors to monitor engine parameters, including engine speed, coolant temperature, fuel pressure, and various other engine functions. It processes this data in real-time and adjusts engine settings accordingly to maintain peak performance and emissions compliance.

Some of the features of this ECU include closed-loop fuel control, which continuously adjusts fuel delivery to optimize engine performance and reduce emissions. It also includes a diagnostics function, which allows technicians to quickly identify and address any issues that may arise.

The Mercury 590-06744 ECU is designed to work seamlessly with other engine components, such as the ignition system, fuel injection system, and various sensors. It communicates with these components using a digital bus system, which allows for quick and reliable data transfer.

This ECU is a remanufactured unit, which means that it has been thoroughly tested, inspected, and rebuilt to meet OEM specifications. It comes with a one-year warranty against defects in materials and workmanship, providing peace of mind to boat owners and technicians.

In summary, the Mercury 590-06744 engine control unit (ECU) is a vital component for the Marquis series engines manufactured by Mercury Marine in 2003. Its advanced features, robust construction, and reliable performance make it an essential upgrade for any boat owner looking to maximize the potential of their engine system.

The Mercury 590-06744 2003 Marquis engine ECU (Electronic Control Unit) with part number LKQ452979052 is an essential component for operating the engine's fuel and ignition systems efficiently. Replacing a faulty ECU can improve engine performance and prevent potential issues. However, before making a purchase, it's crucial to consider the pros and cons.

1. Improved Engine Performance: A new ECU ensures optimal engine functionality, enhancing performance and fuel efficiency.

2. Enhanced Emissions Control: A faulty ECU can cause increased emissions. Replacing it with a new one ensures proper emissions control.

3. Cost-Effective: Buying a used or rebuilt ECU can be a more affordable alternative to purchasing a new one from the dealership.

4. Easy Installation: The ECU is a plug-and-play component, making installation relatively straightforward, even for non-professionals.

1. Risk of Hidden Damage: Purchasing a used or rebuilt ECU may come with the risk of hidden damage that could lead to future issues.

2. Potential Compatibility Issues: Ensure the ECU is compatible with your specific engine model and year to avoid potential issues.

3. Unknown History: Buying a used ECU means you're unaware of its previous use and maintenance history, which could impact its reliability.

4. Limited Warranty: Used or rebuilt ECUs typically come with limited or no warranty coverage.

In conclusion, the decision to buy a Mercury 590-06744 2003 Marquis engine ECU, LKQ452979052, depends on various factors, including your budget, the desired level of reliability, and the importance of having a warranty. If you're looking for a cost-effective solution and are comfortable with the potential risks associated with a used or rebuilt ECU, it could be a suitable option. However, if you prefer a more reliable and warranty-protected solution, consider purchasing a new ECU from a trusted supplier or dealership. Ultimately, weigh the pros and cons carefully and make an informed decision based on your specific needs and circumstances.

Details:

ATTENTION: Stock photo shows multiple items. This listing is for 1 ITEM ONLY, Some modules may need to be reprogrammed at a service center. This is NOT a manufacturer part number, and can be disregarded. Will fit: Ford Crown Victoria 2003 - 2003 Electronic Control Module; gasoline, Base, w/o LX Sport; ID 3U7A-EDB, Mercury Grand Marquis excl. No photos of the actual Engine Control Unit ECU are available.

part #: lkq452979052 prices

• $130.40-$132.35

specifications ecusrush:

• for models: Marquis, Grand
• for makes: Mercury
• for years: 2003
• part type: Engine Ecu
• oe/oem part number: 3u7a12a650edb 3u7a12a650edc 3u7aedb 3u7aedc 3u7z12a650edc 3w7a12a
• interchange part number: 590-06744
• manufacturer warranty: 6 Month
• warranty length: 6 Month Warranty
• partout id: A-129564723

offer ecusrush:

• availability: In Stock
• sold: 0
• options: Ship-to-home
• quantity: 1
• started: May 25, 2026

general ecusrush:

• Car Truck Parts Accessories > Starters, Alternators, ECUs Wiring > ECUs Computer Modules
• condition: Used

seller ecusrush:

• # reviews: 509938
• rating: 98.7%
• city: El Paso, Texas

payments ecusrush:

• wallet: Paypal
• credit card: Mastercard
• other

returns ecusrush:

• paid by: Buyer
• time: 30 Days
• policy: Returns Accepted

shipping ecusrush:

• carrier: UPS
• cost: $0.00
• transit: 4-9 Days
• class: Standard
• type: Fixed
• service: UPS Ground

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