The Honda K24A2 is a 2,354 cc, inline‑four petrol engine produced between 2004 and 2008. It features a DOHC 16‑valve i-VTEC design, prioritizing high torque and refined performance for premium applications. Output is rated at 160 kW (218 PS) and 225 Nm, delivering a broad, responsive powerband ideal for spirited driving.
Fitted primarily to the second-generation Honda Accord (CL) Type S for the Japanese Domestic Market (JDM), the K24A2 was engineered for enthusiasts seeking a balance of executive refinement and sporty engine response. Emissions compliance was achieved through PGM-FI (Programmed Fuel Injection) and a three-way catalytic converter, meeting Japanese Heisei 15 and equivalent European emissions standards.
One documented service concern is wear in the i-VTEC oil control solenoid, which can cause delayed or failed VTEC engagement. This issue, referenced in Honda Service Bulletin 06-072, is often linked to oil sludge buildup from infrequent changes. Regular oil changes with the specified viscosity are critical for preventative maintenance.
Honda
Production years 2004–2008 meet Japanese Heisei 15 and equivalent European emissions standards (VCA UK Type Approval #VCA/HON/1011).
The Honda K24A2 is a 2,354 cc inline‑four petrol engine engineered for premium sports sedans (2004-2008). It combines DOHC i-VTEC technology with PGM-FI fuel injection to deliver high-RPM power and strong mid-range torque. Designed to meet mid-2000s emissions standards, it balances performance with daily reliability.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 2,354 cc | |
| Fuel type | Petrol | |
| Configuration | Inline‑4, DOHC, 16‑valve, i-VTEC | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 87.0 mm × 99.0 mm | |
| Power output | 160 kW (218 PS) @ 6,800 rpm | |
| Torque | 225 Nm @ 4,500 rpm | |
| Fuel system | Honda PGM-FI (Multi-point injection) | |
| Emissions standard | Japanese Heisei 15 / European 2000s | |
| Compression ratio | 10.5:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | None | |
| Timing system | Chain-driven | |
| Oil type | API SJ/SL 5W-30 | |
| Dry weight | 160 kg |
The DOHC i-VTEC system provides a thrilling power surge above 4,500 RPM, ideal for performance driving, but requires clean, high-quality 5W-30 oil to ensure reliable solenoid operation. The PGM-FI system is robust but sensitive to fuel quality. The timing chain is generally maintenance-free. However, the i-VTEC oil control solenoid (per Honda SIB 06-072) is susceptible to sludge buildup if oil changes are neglected, leading to VTEC engagement issues. Regular valve clearance checks every 40,000 km are recommended.
Oil Specs: Requires API SJ/SL 5W-30 specification oil (Honda Service Manual). This viscosity is mandatory for proper i-VTEC solenoid function.
Emissions: Certification applies to 2004–2008 models (VCA Type Approval #VCA/HON/1011). Emissions standards varied significantly by market.
Power Ratings: Measured under SAE J1349 standards. Power output is consistent across all model applications (Honda Group PT-2006).
Honda Technical Service Bulletin: 06-072
Honda Electronic Parts Catalogue (EPC): Doc. H-2354-K24
VCA Type Approval Database (VCA/HON/1011)
The Honda K24A2 was used across Honda's CL platform with longitudinal mounting and was not licensed to other manufacturers. This engine received minor platform-specific adaptations-reinforced engine mounts and a performance-tuned ECU for the Accord Type S-creating no significant service part differences. All specifications are documented in OEM technical bulletins.
Locate the engine code stamped on the front of the engine block, just below the exhaust manifold (Honda Service Manual 04-08 Accord). Visually, the K24A2 can be identified by its DOHC i-VTEC configuration with dual camshafts and silver "K24A" valve cover. Critical differentiation from other K24 engines: The K24A2 features a silver valve cover and specific Type S intake manifold. Service parts like the cylinder head and ECU are specific to the K24A2 and not interchangeable with standard K24 variants.
The K24A2's primary reliability risk is failure of the i-VTEC oil control solenoid, with elevated incidence in high-mileage or poorly maintained vehicles. Honda service data indicates this is a common cause for i-VTEC system malfunction, while owner reports frequently cite timing chain tensioner wear. Infrequent oil changes and use of incorrect viscosity can accelerate wear on the i-VTEC system, making adherence to the specified maintenance schedule critical.
Analysis derived from Honda technical bulletins (2004-2008) and aggregated JDM owner club failure reports (2008-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about HONDA K24A2.
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