4 min read Jul 11, 2024

06401-K45-N41: Understanding the Honda Civic Engine Code

Are you wondering what the code 06401-K45-N41 means on your Honda Civic engine? Look no further! In this article, we'll break down the meaning behind this code and provide you with essential information about your vehicle's engine.

What is an Engine Code?

An engine code, also known as an engine number or engine serial number, is a unique identifier assigned to each engine produced by a manufacturer. It's usually stamped or printed on the engine block or cylinder head and provides crucial information about the engine's specifications, production date, and other details.

Decoding 06401-K45-N41

Let's dissect the code 06401-K45-N41 to understand what each part represents:

06401: Engine Type

The first part, 06401, indicates the engine type. In this case, it's a K-series engine, which is a family of inline-four cylinder engines produced by Honda. The K-series engine is known for its high-revving capabilities, fuel efficiency, and reliability.

K45: Engine Size and Configuration

The second part, K45, represents the engine size and configuration. The "K" refers to the engine family, while the "45" indicates the engine displacement in liters (1.8 liters, to be exact). This engine configuration is commonly found in the 8th and 9th generation Honda Civic models.

N41: Engine Specification and Features

The final part, N41, specifies the engine's features and specifications. This code indicates that the engine has a VTEC (Variable Valve Timing and Lift Electronic Control) system, which optimizes engine performance and efficiency. The "N" represents the engine's fuel injection system, while the "41" denotes the engine's specific features, such as the exhaust system and emission controls.

What Does it Mean for Your Honda Civic?

Now that you've decoded the engine code, what does it mean for your Honda Civic? Here are some key takeaways:

  • Engine Performance: With a K-series engine and VTEC technology, your Honda Civic is capable of delivering robust performance and excellent fuel efficiency.
  • Maintenance and Repair: Knowing your engine's specifications can help you identify the correct replacement parts and maintenance procedures.
  • Resale Value: A well-maintained Honda Civic with a K-series engine can retain its value better than other models.


In conclusion, understanding the 06401-K45-N41 engine code provides valuable insights into your Honda Civic's engine specifications, performance capabilities, and maintenance requirements. By knowing what makes your engine tick, you can take better care of your vehicle and ensure it runs smoothly for years to come.

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