The Honda F23A7 is a 2,254 cc, inline‑four petrol engine produced between 1998 and 2002. It features a single overhead camshaft (SOHC) with 16 valves and Honda's PGM — FI (Programmed Fuel Injection) system. This design prioritized smooth, linear power delivery and low — end torque for larger Honda sedans, producing 110 kW (150 PS) and 206 Nm of torque.
Fitted primarily to the sixth — generation Honda Accord (CG/CH) for the European and Japanese markets, the F23A7 was enginee…
Honda
Production years 1998–2002 meet applicable European (Euro 2) and Japanese emissions standards for passenger vehicles of that era (Honda Internal Emissions Certification Docs).
The Honda F23A7 is a 2,254 cc inline‑four naturally aspirated petrol engine engineered for mid-size to large sedans (1998-2002). It combines SOHC 16-valve architecture with PGM-FI fuel injection and a balance shaft to deliver smooth, linear power and refined cruising. Designed to meet late-1990s emissions standards, it prioritizes drivability and mechanical simplicity.
| Parameter | Value | Source |
|---|---|---|
Displacement | 2,254 cc | |
Fuel type | Petrol | |
Configuration | Inline‑4, SOHC, 16‑valve | |
Aspiration | Naturally aspirated | |
Bore × stroke | 86.0 mm × 97.0 mm | |
Power output | 110 kW (150 PS) @ 5,700 rpm | |
Torque | 206 Nm @ 4,900 rpm | |
Fuel system | PGM-FI (Programmed Fuel Injection) | |
Emissions standard | Euro 2 / Japanese 1998 Standards | |
Compression ratio | 9.3:1 | |
Cooling system | Water‑cooled | |
Turbocharger | None | |
Timing system | Belt-driven | |
Oil type | Refer to vehicle handbook / manufacturer specification | |
Dry weight | 142 kg |
The Honda F23A7 was used across Honda's CG/CH platform with transverse mounting. This engine received minor ECU and accessory bracket variations between sedan and coupe body styles, creating minor part number differences. All adaptations are documented in OEM technical bulletins.
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The F23A7 is renowned for its durability, with the primary long-term concern being timing belt failure if replacement intervals are neglected. Honda service data indicates that failure to replace the belt at 90,000 km can lead to catastrophic engine damage due to its interference design. The ignition coils and balance shaft seals are also common wear items after 150,000 km.
Analysis derived from Honda technical bulletins (1998-2002) and aggregated workshop repair data. Repair procedures should follow manufacturer guidelines.
The most common questions about engine codes, what they mean, how to find them and how this database works
Yes, the F23A7 is exceptionally reliable and durable when maintained properly. Its robust internals mean it can easily surpass 300,000 km. The main long-term concerns are the timing belt and ignition coils. Regular oil changes and timely belt replacement are paramount for longevity.
The most frequent issues are timing belt failure (if neglected), individual ignition coil failures, oil leaks from the balance shaft seals, and coolant leaks from the plastic thermostat housing. These are well-documented in Honda service bulletins and are generally inexpensive to fix.
The F23A7 engine was used in the sixth-generation Honda Accord (CG/CH chassis) for the European and Japanese markets from 1998 to 2002. It was found in both the sedan and coupe body styles in the 2.3i variant.
While not a common modern tuning engine, basic modifications like an intake, exhaust, and ignition upgrades can yield modest power gains. Its primary value is in its legendary reliability and smooth operation rather than high performance potential.
Fuel economy is average for its size and era. Expect around 10.0-11.0 L/100km in mixed driving (approximately 26-28 mpg UK). Highway cruising can see figures closer to 7.5 L/100km (38 mpg UK), depending on driving style and vehicle condition.
Yes. The Honda F23A7 is an interference engine. This means if the timing belt breaks, the pistons will contact the valves, causing catastrophic engine damage. This makes adhering to the 90,000 km replacement interval absolutely critical.
Honda originally recommended 10W-40 engine oil meeting API SJ specifications. A high-quality mineral or semi-synthetic oil of this grade is suitable. Change intervals should be every 10,000 km or 6 months.
Comprehensive technical documentation and regulatory references
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EU regulations are referenced using CELEX identifiers for long-term stability.
EUR-Lex
EU emissions and type-approval regulations (e.g., CELEX:32007R0715, CELEX:32017R1151).
GOV.UK: Vehicle Approval & V5C
UK vehicle approval processes, import rules, and MoT guidance.
DVLA: Engine Changes & MoT
Official guidance on engine swaps and inspection implications.
Vehicle Certification Agency (VCA)
UK type-approval authority for automotive products.
Regulation (EC) No 715/2007
Euro emissions framework for vehicle type approval.
Commission Regulation (EU) 2017/1151
WLTP and RDE testing procedures for emissions certification.
GOV.UK: Vehicle Approval
UK compliance and certification requirements for imported and modified vehicles.
VCA Certification Portal
Type-approval guidance and documentation.
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