Which Acura has a K24?
The Acura TSX is the model that uses a K24 engine.
In detail, the TSX used 2.4-liter K-series engines in two generations: K24A2 in the 2004–2008 TSX and K24Z3 in the 2009–2014 TSX. Other Acura models do not use the K24 as part of their standard powertrain lineup.
The TSX: Acura’s K24 Application
The TSX represents the primary, production application of the K24 in Acura’s lineup. Across its two generations, it adopted two distinct K-series powerplants tuned for front-wheel drive and offering a balance of performance and efficiency.
K24 variants powering the TSX
The two K24 engines that powered the TSX across its generations are listed below.
- K24A2 — 2.4L i-VTEC, used in the 2004–2008 Acura TSX
- K24Z3 — 2.4L i-VTEC, used in the 2009–2014 Acura TSX
These two engines share the same core displacement and family but differ in tuning, intake, exhaust, and ECU calibration to suit the different TSX generations.
Beyond the TSX: Do other Acura models use a K24?
In Acura’s modern lineup, the K24 is not a common powerplant outside the TSX. Other models typically rely on different engine families, such as V6 options in the larger sedans and SUVs, or newer K-series 2.0 engines in some models. The K24’s presence in Acura’s history is largely tied to the TSX rather than the broader current lineup.
How to identify which K24 is in your TSX
To confirm which K24 variant a TSX has, you can use several verification methods. The following list explains how to tell them apart.
- Engine code: Look for the engine designation stamped on the engine block/valve cover. TSX models will show either K24A2 (2004–2008) or K24Z3 (2009–2014).
- Model year and production window: Cross-check the VIN and original window sticker or service records with the engine code to confirm which generation your TSX belongs to.
- Auxiliary hardware clues: The K24A2 and K24Z3 have different intake manifolds, ECU calibrations, and some accessory configurations reflecting their model-year design updates.
In practice, the combination of the year range and the engine code on the block is the most reliable way to identify which K24 variant your TSX uses.
Summary
The K24 engine family in Acura history is most closely associated with the TSX, which used two variants: K24A2 (2004–2008) and K24Z3 (2009–2014). No other current Acura model relies on the K24, making the TSX the definitive example of Acura’s K-series 2.4L powerplant. If you’re shopping or maintaining a TSX, verify the engine code to confirm which K24 you have and plan parts or maintenance accordingly.
What Honda's come with a K24?
The K24 engine is found in various Honda and Acura models, including the Honda Accord, CR-V, Element, and Civic Si, as well as the Acura TSX, ILX, and TLX. This 2.4-liter engine is versatile and has been used across different vehicle types from sporty sedans to family crossovers over several model years.
Honda models with a K24
- Accord: Several generations of the Accord, including the 2003-2012 and 2013-2017 models, have featured the K24.
- CR-V: The CR-V crossover has used the K24 engine in models from 2002 through 2014.
- Element: The K24 powered the compact SUV from 2003 to 2011.
- Civic Si: Performance-oriented versions of the Civic Si from 2012-2015 came with the K24 engine.
Acura models with a K24
- TSX: The K24A2 variant was a prominent engine in the Acura TSX from 2004-2008. Later models, like the 2009-2014 TSX, also used K24 variants.
- ILX: The K24 was featured in the Acura ILX, with different variants like the K24V7 used in the 2016-present model.
- TLX: The 2.4L TLX was equipped with a K24W7 engine from 2015-2020.
What Acura has a K24 engine?
Acura TSX
This engine was available in the 2004-2008 Acura TSX in the U.S., the 2002-08 JDM Honda Odyssey Absolute, and the 2002-08 JDM Accord Type-S. With a sky-high redline of 7,200 rpm and a solid reputation for strength and durability, the K24A2 delivers both power and fuel efficiency.
Does the Acura TSX have a K24?
The K24A2 engine used in the TSX was related to the engine in the Honda Accord (7th generation), the Honda CR-V, and the Honda Element.
Is K20 or K24 better?
Neither the K20 nor the K24 is inherently "better"; the choice depends on your goals. The K24 offers more torque and is better for daily driving due to its larger displacement, while the K20 is more "rev happy" and has higher peak horsepower potential at higher RPMs. A popular high-performance hybrid is combining a K24 block with a K20 cylinder head to gain the benefits of both.
K24
- Pros:
- More low-end torque and power, making it more driveable for daily use.
- Greater peak power potential due to its larger displacement.
- Often more affordable to acquire.
- Cons:
- Has a lower redline and is less "rev happy" than the K20.
- Some base models lack high-performance features like piston oil squirters and a high-flowing head, requiring modifications for maximum performance.
K20
- Pros:
- Has a higher revving nature and can produce more horsepower at higher RPMs.
- Smaller displacement makes it ideal for lightweight chassis.
- Cons:
- Lacks low-end torque compared to the K24.
- Can require more modifications to reach the power potential of a stock K24, especially for low-end torque.
Hybrid option
- K24 with K20 head: A common and effective build is to use a K24 block (for its displacement and torque) with a K20 head (for its higher revving characteristics and better airflow). This combination provides a good balance of both engines' strengths.
