fits model: Efi. make: Mercury. year: 2003.

( Manufacturer Part Number: 1150424CY ), ( Part Type: Hp Ecu Compression ), ( Stroke: 2 Stroke Efi ), ( Country/region Of Manufacture: United States )
The 1150424cy 2003 Mercury 150 HP EFI Optimax ECM is a high-performance outboard engine that delivers exceptional power and efficiency. This engine features an EFI (Electronic Fuel Injection) system, which provides precise fuel delivery for optimal engine performance, reduced emissions, and improved fuel economy.
The engine is equipped with a 150 HP Optimax ECM, which is a state-of-the-art electronic control module that provides advanced engine management capabilities. The ECM uses sensor data to control various engine functions, including fuel injection, ignition timing, and throttle position, to ensure optimal engine performance under a wide range of operating conditions.
One of the standout features of this engine is its compression ratio, which is excellent at 1.73:1. This high compression ratio allows the engine to burn fuel more efficiently, producing more power while also reducing emissions. The engine also features a four-stroke, direct-injected design, which helps to reduce noise and vibration while improving fuel efficiency and engine longevity.
The 1150424cy 2003 Mercury 150 HP EFI Optimax ECM is also known for its durability and reliability. The engine is built with high-quality materials and features advanced cooling systems, including a heat exchanger and a water pump, to help keep the engine running cool even under heavy load. The engine also features a heavy-duty gearcase and a robust propulsion system to ensure smooth and reliable operation.
Overall, the 1150424cy 2003 Mercury 150 HP EFI Optimax ECM is a top-performing outboard engine that offers excellent power, efficiency, and reliability. Its advanced EFI system, high compression ratio, and durable construction make it an ideal choice for powering a wide range of watercraft, from high-speed racing boats to family-friendly pontoons.
Pros of buying a 2003 Mercury 150 HP EFI Optimax with great compression:1. Reliability: The Optimax engine is known for its durability and reliability, which is a significant advantage when considering a used outboard motor.
2. Powerful: With a 150 HP engine, the boat will have enough power to handle a variety of water conditions and activities.
3. Fuel Efficiency: The EFI (Electronic Fuel Injection) system can help improve fuel efficiency, saving you money in the long run.
4. Easy Start: The EFI system also makes it easier to start the engine, even in cold weather.
5. Great Compression: A motor with great compression indicates that it is in good condition and should run smoothly.
Cons of buying a 2003 Mercury 150 HP EFI Optimax with great compression:1. Age: The motor is 18 years old, which means it may have some wear and tear and may require more frequent maintenance or repairs.
2. Availability of Parts: As the motor is older, it may be more challenging to find replacement parts if needed.
3. Price: Older motors may be more expensive than newer models with similar horsepower, even if they are in good condition.
Conclusion:The 2003 Mercury 150 HP EFI Optimax with great compression is a reliable and powerful outboard motor that can handle a variety of water conditions. However, as it is an older model, it may require more frequent maintenance or repairs and may be more expensive than newer models. If you are willing to put in the necessary maintenance and are willing to pay a premium for the reliability and power of this engine, it could be a great option. Ultimately, it is important to thoroughly inspect the motor before purchasing and to consider your specific needs and budget.
Recommendation:Before purchasing, it is recommended to have the motor inspected by a professional to ensure that it is in good condition and to get an estimate of any necessary repairs. Additionally, it is a good idea to research the availability and price of replacement parts for the model and to consider your specific needs and budget before making a final decision.
Shipping, I will take care of setting up shipping for buyer, but buyer pays cost. This motor came in to me about a month ago perfect running condition. So needless to say guy did not buy motor.
I then checked spark and found it to have no. I sold lower unit, and the 20 mid with trim so now all have left is complete power head. So I hit key again and got nothing, it would turn over just fine but not fire.
So I then had an guy come in and seen motor sitting here asked if he could buy the lower unit, that is right when decided to just part darn thing out.
Code came up for ecu. I listed this as not running for parts because it currently is and needs an new ecu before will run again. Here is the story with this engine.
Motor started right up and ran perfect for about 4 min then just died. I fired up the motor for him so he could see it run. 5 liter Efi power head.
So I called an friend up to bring his DDT scanner over and plug it in see what needed run again. So I tried to find an decent price ecu with no luck.
Sold as is with no warranty offered. I took engine in on trade towards an 200 Efi was selling.
This is not an optimax, yes it looks like one but I promise you. I listed it on cl for sale an had guy come look at literally hour after. This power head has 120 to 125 psi on all 6 cylinders.
Retried it about 4 more times and then quit.