Does the Acura TSX have a K24?

Yes — the Acura TSX uses a 2.4-liter Honda K-series inline-four, with the exact K-code varying by generation. Early models commonly use a K24A-series design, while later models use a K24Z-series design.

Overview of the TSX’s K-series lineage

The TSX has relied on Honda’s 2.4-liter K-series engine for both of its generations. Over the years, Honda translated the same basic displacement into slightly different code names as revisions and market configurations evolved. This matters for maintenance, parts compatibility, and potential upgrades.

Engine codes by generation

Below is a breakdown of the engine codes most commonly associated with the TSX by generation and market.

• First-generation TSX (2004–2008): 2.4L i-VTEC inline-4. The engine is most often identified in North American sources as the K24A2.


• Second-generation TSX (2009–2014): 2.4L i-VTEC inline-4. The engine is identified in North American documentation as the K24Z3.

Note: Engine codes can vary by market and trim level. Always verify the exact code on the engine block or via the vehicle’s VIN to ensure you’re looking at the correct variant.

What this means for owners and buyers

For buyers and current owners, the practical takeaway is that the TSX’s powerplant sits within Honda’s K-series family, but two main variants cover the model’s U.S. timeline. Parts compatibility and service procedures align with the 2.4L K-series design, though specific components (intake manifolds, wiring harnesses, or sensors) may differ between K24A and K24Z models.

When shopping for replacement parts, repairs, or performance upgrades, confirm the engine code to avoid mismatches. VIN decoding or a look at the valve cover and timing cover markings can quickly reveal whether you have a K24A (early) or a K24Z (later) variant.

Summary

The Acura TSX does use a K-series 2.4-liter engine, with two primary variants across its production run: K24A-series for the early models and K24Z-series for the later models. Verifying the exact engine code is important for parts, maintenance, and any potential upgrades.

Which Acura has a K24?

Several Acura models have used the K24 engine, most notably the Acura TSX (2004-2014) and the Acura ILX (2016-present). The Acura TLX also featured a K24 engine in some model years (2015-2020). 

• Acura TSX: The first-generation TSX (2004-2008) was equipped with the K24A2 engine, and the second generation (2009-2014) continued to use various K24 variants. 
• Acura ILX: The K24Z7 was used in the 2013-2015 model years, while the K24V7 powered the 2016-present ILX models. 
• Acura TLX: Some model years of the TLX, specifically 2015-2020, were equipped with the K24W7 engine. 

What kind of engine is in the Acura TSX?

The TSX Sport Wagon is mechanically identical to the TSX sedan, sharing the 201-horsepower Honda K engine 2.4L DOHC inline four-cylinder engine, Sequential SportShift 5-speed automatic transmission, and four-wheel independent sports suspension.

What year does TSX have K24?

2004-2008
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.

How much horsepower does a K24 TSX have?

The Acura TSX's K24 engine (specifically the K24A2) produced 205 horsepower in its most potent, stock form for the 2006-2008 model years. Earlier models produced around 200 hp. This engine is known for being a strong and durable 2.4-liter, DOHC, i-VTEC inline-4.
 
You can watch this video to see a dyno test of a stock K24 engine: 59sBlipShiftApexYouTube · Dec 6, 2021
Horsepower figures by model year 

• 2004-2005 models: 200 hp 
• 2006-2008 models: 205 hp (due to updates like increased throttle body and intake valve diameter) 

Engine specifications and features

• Engine: 2.4-liter, DOHC, i-VTEC inline 4-cylinder
• Torque (2006-2008): 166 lb-ft @ 4,500 rpm
• Redline: 7,000 rpm
• Block: Lightweight aluminum 

This video explains how to achieve 350 horsepower from the K24A2 engine: 41sVivid RacingYouTube · Apr 29, 2024
Performance

• The K24A2 is popular for engine swaps because of its strength and ability to handle upgrades, according to this YouTube video and MotorTrend. 
• Upgrades like exhaust headers, intakes, and cylinder heads can add significant horsepower, as seen in this YouTube video and this YouTube video.