Which Acura TSX has K24A2?
The K24A2 is found in the first-generation Acura TSX, produced from 2004 through 2008. This 2.4-liter i-VTEC engine defined the early TSX driving experience with a lean, rev-happy profile.
Understanding the K24A2 in the TSX
The K24A2 belongs to Honda’s K-series family and was selected to power the early US-market TSX sedans. It helped establish the TSX as a more performance-oriented alternative to the Accord, pairing a refined intake with variable valve timing for a balance of daily livability and spirited performance.
Model years and the K24A2
Below is the primary generation where the K24A2 was used in the TSX.
- 2004–2008 Acura TSX (first generation): 2.4L i-VTEC K24A2 engine
In the following-generation TSX (2009–2014), Acura transitioned to a newer K-series variant (e.g., K24Z3) to meet updated emissions and efficiency standards, moving away from the K24A2 designation.
Key specifications of the K24A2 in the TSX
These are the characteristic traits of the engine as it appeared in the early TSX lineup.
- Displacement: 2.4 L (2354 cc)
- Configuration: Inline-4, DOHC with i-VTEC
- Power output: typically around 200–210 horsepower, depending on year and market
- Torque: roughly 160 lb-ft (varies by year)
- Valvetrain: 4 valves per cylinder with i-VTEC
- Block/Head: aluminum construction
These specs illustrate why the K24A2 is closely associated with the early TSX and why enthusiasts still seek these models for a balanced blend of efficiency and performance.
Transition to later TSX engines
To provide broader context, the TSX lineup shifted to newer K-series variants after 2008. The 2009–2014 TSX models adopted updated powertrains (notably K24Z3 and related variants) to meet evolving standards, delivering incremental gains in efficiency and refinement while maintaining the TSX’s characteristic blend of comfort and sportiness.
What to check when buying a K24A2 TSX
If you’re shopping for a TSX with the K24A2, prioritize documented maintenance history and signs of regular, high-rev operation typical of a performance-oriented four-cylinder. Common aging concerns include timing chain wear, VVT oil issues, injector health, and overall oil condition. A thorough pre-purchase inspection focusing on timing-chain life, oil consumption, misfires, and engine noise is advisable.
Summary
The K24A2 powered the first-generation Acura TSX from 2004 to 2008, delivering a refined 2.4-liter, i-VTEC-equipped driving experience that defined the model’s early character. When evaluating a TSX from this era, the K24A2 is the engine to expect, while later 2009–2014 models moved to newer K-series variants for updated performance and efficiency.
What year Acura TSX to stay away from?
Years to be cautious with the Acura TSX include 2009-2010 due to excessive oil consumption issues, and 2004-2008 first-generation models that may have transmission slipping problems or issues with the power steering and AC compressor. The 2009 and 2010 models are also more likely to experience a soft brake pedal.
This video discusses potential issues with the 2004-2008 Acura TSX: 57sAutoMotivateYouTube · Mar 28, 2021
Years with specific issues to watch for:
- 2009-2010: These models are known for significant oil consumption, especially the four-cylinder engines. The issue can be resolved by replacing piston rings and pistons, but this is a costly repair ($2,500+). The 2009 model has also been reported to have brake issues, such as a soft brake pedal.
- 2004-2008:
- Transmission: Some owners of first-generation models have experienced slipping transmissions, which can be mitigated by frequent fluid changes but may require replacement in severe cases.
- Power Steering and AC: Power steering systems are prone to leaks, and AC compressors can fail, potentially contaminating the entire system and requiring a costly replacement.
- Brakes: Some owners report premature brake wear.
This video discusses potential issues with the 2009-2014 Acura TSX: 56sDiscerning CarsYouTube · Jun 16, 2023
General advice for all models:
- Vehicle history: Regardless of the year, always check the vehicle's history report and perform a pre-purchase inspection, paying close attention to the oil consumption and transmission health.
- Maintenance: Regular maintenance, particularly oil changes, can help prevent or mitigate problems in any TSX.
- Recall check: Check for any open recalls before purchasing a vehicle.
Which Acura had the K24A2?
-2008 Acura TSX
K24A2: 2004-2008 Acura TSX.
Does the 2012 Acura TSX have a K24?
The 2012 Acura TSX features two engine options: an i-VTEC K24 2.4-liter variant with 201 horsepower and a Sequential SportShift automatic transmission is standard, and a 3.5-liter V6 with 280 horsepower is optional.
What TSX has K24A2?
The 2004 model year TSX's powertrain consisted of a 2.4-liter inline four-cylinder K24A2 engine which produced 200 horsepower, a six-speed manual transmission (which featured a magnesium casing, to reduce weight), and a front wheel drive layout.
