The Acura TSX, model years 2004 through 2008, uses the K24A2 2.4-liter i-VTEC engine.
The K24A2 is a member of Honda's K-series family and is most closely associated with the first-generation TSX. This article explains exactly which Acura model used the K24A2 and what to know about its specifications and maintenance.
Model(s) That Use the K24A2
Below is the primary Acura model equipped with the K24A2 engine. Other Acura/Honda models use different K-series variants, so the K24A2 identification helps when confirming engine swaps or maintenance parts.
- Acura TSX (2004–2008)
The TSX is the main Acura vehicle that used the K24A2, representing Honda's 2.4L i-VTEC option in the Acura lineup during this era.
Engine Details and Maintenance Considerations
The K24A2 is a 2.4-liter inline-4 engine with double overhead camshafts and i-VTEC variable valve timing. It delivers performance suitable for a sporty compact, with output generally around 200 hp depending on year and market, and solid mid-range torque.
Maintenance notes for this engine emphasize timing chain durability, routine oil changes, VTEC solenoid checks, and typical wear items like the water pump, tensioners, and guides. When buying a used TSX with a K24A2, inspect for oil leaks, abnormal noises, and a clean compression test to confirm cylinder integrity.
- Potential issues include oil leaks around the valve cover, failures of the VTEC solenoid, and timing chain wear in high-mileage examples.
Regular servicing, using the correct grade of oil and following the manufacturer maintenance schedule, can help prolong this engine's life.
Summary
The K24A2 is most closely associated with the Acura TSX from 2004 to 2008. If you're researching parts, swaps, or maintenance for this engine, start with TSX-specific guides and verify the engine code on the valve cover to confirm it is K24A2.