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N73 Used BMW Engine

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N73 Used BMW Engine For Sale

  • Engine Size (liters) 6
  • “# of Cylinders
  • and layout” V12
  • # of Valves 48
  • Camshaft and Valve Timing Valvetronic
  • HP Rating 439
  • Torque Rating 440
  • Active Years 2003-2008
  • Example Models E65 760Li

Watch this before buying a Used Engine!

If you’re considering buying a used engine, it’s important to know what to look for to avoid any potential problems. A thorough inspection can help you identify any issues before you make your purchase. This video provides valuable tips on what to look for when buying a used engine to ensure it’s in good condition.

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N73 Used BMW Engine: Features, Specifications, and Benefits

If you are looking for a robust and reliable engine for your BMW, the N73 engine may be just what you need. BMW produced the N73 engine between 2003 and 2008, and it is known for its exceptional performance and durability. In this article, we will look closer at the features, specifications, and benefits of the N73 engine.

Features of the N73 engine

The N73 engine is a V12 engine with a displacement of 6 liters. It has 48 valves and features BMW's Valvetronic camshaft and valve timing system. This system allows for precise control of the engine's valves, resulting in better fuel efficiency and more power.

Specifications of the N73 engine

The N73 engine has a horsepower rating of 439 and a torque rating of 440 lb-ft. It was used in BMW models such as the E65 760Li. The engine is made from high-quality materials and designed to be powerful and durable.

Benefits of the N73 engine

One of the main benefits of the N73 engine is its power. With a horsepower rating of 439, it can produce impressive acceleration and top speeds. Additionally, the Valvetronic system helps improve fuel efficiency, saving you money on gas. Another benefit of the N73 engine is its reliability. BMW is known for producing high-quality engines, and the N73 is no exception. With proper maintenance, this engine can last for many years without experiencing major issues.

Applications of the N73 engine

The N73 engine was used in several BMW models, including the 760Li, known for its luxurious features and exceptional performance. The engine can also be used in custom builds or as a replacement for a damaged or worn-out engine.

Maintenance of the N73 engine

To keep your N73 engine running smoothly, it is important to perform regular maintenance. This includes oil changes, filter replacements, and inspections of the engine's components. It is also important to use high-quality parts and fluids to ensure optimal performance and longevity.

Common issues with the N73 engine

While the N73 engine is known for its reliability, owners may encounter some common issues. These can include oil leaks, cooling system failures, and issues with the engine's electronics. However, these issues are rare and can often be prevented through proper maintenance.

Repair and replacement options for the N73 engine

If your N73 engine is experiencing issues, there are a few options for repair and replacement. Depending on the extent of the damage, you may be able to repair the engine yourself or with the help of a mechanic. In more severe cases, you may need to replace the engine entirely. Used engines are often a cost-effective option for replacement, and many come with a warranty for added peace of mind.

Performance upgrades for the N73 engine

For those looking to increase the power and performance of their N73 engine, several aftermarket upgrades are available. These include performance air intake systems, exhaust systems, and engine tuning software. However, it is important to note that these upgrades can void your vehicle's warranty and However, it is essential to note that these upgrades can void your vehicle's warranty and may not be legal in all areas. It is vital to research and consults with a professional before making any modifications to your engine.

Comparing the N73 engine with other BMW engines

Compared to other BMW engines, the N73 stands out for its exceptional power and smooth operation. However, it is important to note that the engine's size and complexity can make it more difficult and expensive to maintain and repair than some of BMW's smaller engines.

Buying a used N73 engine

If you are considering purchasing a used N73 engine, it is important to do your research and work with a reputable seller. Look for engines with low mileage and a history of proper maintenance. You may also want to consider purchasing an engine with a warranty for added peace of mind.


The N73 engine is a powerful and reliable option for BMW owners looking for exceptional performance and durability. With its advanced Valvetronic system and high-quality construction, this engine can provide years of reliable service with proper maintenance and care.


  1. What is the displacement of the N73 engine? The N73 engine has a displacement of 6 liters.
  2. What is the horsepower rating of the N73 engine? The N73 engine has a horsepower rating of 439.
  3. What BMW models use the N73 engine? The N73 engine was used in BMW models such as the E65 760Li.
  4. What maintenance is required for the N73 engine? Regular maintenance, including oil changes and filter replacements, is required to keep the N73 engine running smoothly.
  5. Can the N73 engine be upgraded for increased performance? Yes, aftermarket upgrades such as performance air intake systems and exhaust systems are available for the N73 engine. However, it is important to consult with a professional and consider the potential impact on your vehicle's warranty before making any modifications.