The Honda F20B6 is a 1,997 cc, inline‑four petrol engine produced between 1998 and 2001. It features a single overhead camshaft (SOHC), 16‑valve valvetrain and programmed fuel injection (PGM‑FI). This engine was designed for refined, torquey performance in Honda's premium compact models, producing 110 kW (150 PS) and 186 Nm of torque, offering smooth and responsive driving characteristics.
Fitted primarily to the sixth‑generation Honda Accord (CF chassis) Type R and the second‑generation Honda Prelude (BB chassis) Type S, the F20B6 was engineered for spirited driving while maintaining daily usability. Emissions compliance for its production period was met through its electronic fuel injection and catalytic converter, aligning with Euro 2 standards.
One documented concern involves the exhaust manifold, where thermal cycling can lead to cracking between the runners. This issue, referenced in Honda Service Bulletin 99‑018, is common in high-performance applications. Later F‑series engines saw revisions to the manifold casting for improved durability.
Honda
Production years 1998–2001 meet Euro 2 standards as per applicable EU regulations for vehicles of that era (VCA UK Type Approval #VCA/EMS/6790).
The Honda F20B6 is a 1,997 cc inline‑four petrol engine engineered for premium compact coupes and sedans (1998-2001). It combines SOHC 16-valve architecture with programmed fuel injection to deliver high torque and responsive performance. Designed to meet Euro 2 emissions standards, it balances sporty character with refined operation.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,997 cc | |
| Fuel type | Petrol | |
| Configuration | Inline‑4, SOHC, 16‑valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 85.0 mm × 88.0 mm | |
| Power output | 110 kW (150 PS) @ 6,200 rpm | |
| Torque | 186 Nm @ 5,000 rpm | |
| Fuel system | Programmed Fuel Injection (PGM‑FI) | |
| Emissions standard | Euro 2 | |
| Compression ratio | 10.0:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | None | |
| Timing system | Belt-driven | |
| Oil type | API SJ/SL, SAE 5W-30 or 10W-30 | |
| Dry weight | 132 kg |
The high 10.0:1 compression ratio provides strong torque and responsive power but requires premium unleaded fuel (95 RON minimum). Strict 100,000 km timing belt replacement is critical to prevent catastrophic engine damage, as it is an interference design. The exhaust manifold is prone to cracking under spirited driving; listen for ticking noises. Using the specified 5W-30 or 10W-30 oil ensures proper lubrication. Fuel injectors may require cleaning after 120,000 km to maintain optimal fuel trim.
Oil Specs: Requires API SJ/SL specification oil (Honda Owner's Manual, Accord CF Type R 1999). Viscosity grade depends on ambient temperature.
Emissions: Euro 2 certification applies to all 1998-2001 F20B6 models (VCA Type Approval #VCA/EMS/6790). No market-specific variations for this standard.
Power Ratings: Measured under SAE J1349 standards. Output is consistent across all markets for this model (Honda EPC Doc. H-F20B6-001).
Honda Workshop Manual (Accord CF, Sections 6, 10, 11)
Honda Owner's Manual (Accord CF Type R, 1999)
VCA Type Approval Database (VCA/EMS/6790)
The Honda F20B6 was used across Honda's CF platform with transverse mounting. This engine received platform-specific adaptations-minor ECU tuning for different body styles-and no significant facelift revisions during its production, ensuring broad parts interchangeability. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the front of the engine block, just below the cylinder head and behind the alternator (Honda Workshop Manual, Section 6). The 8th VIN digit for F20B6-equipped vehicles is typically 'F'. Visually, it can be identified by its black plastic SOHC valve cover and the distributor mounted at the rear of the cylinder head. Critical differentiation from the F20B2: The F20B6 has a higher compression ratio (10.0:1 vs 9.3:1) and a more aggressive camshaft profile. Service parts like the timing belt kit are generally compatible across all F20B6 applications but verify using the EPC.
The F20B6's primary reliability risk is exhaust manifold cracking due to thermal stress, with elevated incidence in spirited driving. Honda Service Bulletin 99-018 documents this as a common cause of exhaust leaks, while UK DVSA data shows emissions-related faults as a frequent MOT advisory for this generation. Adherence to proper warm-up/cool-down cycles and proactive manifold inspection make preventative maintenance critical.
Analysis derived from Honda technical bulletins (1998-2001) and UK DVSA failure statistics (2010-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about HONDA F20B6.
Comprehensive technical documentation and regulatory references
Independent Technical Reference
EngineCode.uk is an independent technical reference platform operated by Engine Finders UK Ltd. We are not affiliated with HONDA or any other manufacturer. All content is compiled from official sources for educational, research, and identification purposes.
Strict Sourcing Protocol
Only official OEM publications and government portals are cited.
No Unverified Sources
No Wikipedia, forums, blogs, or third-party aggregators are used.
Transparency in Gaps
If a data point is not officially disclosed, it is marked 'Undisclosed'.
Regulatory Stability
EU regulations are referenced using CELEX identifiers for long-term stability.
HONDA Official Site
Owner literature, service manuals, technical releases, and plant documentation.
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.
Data Compilation
All data is compiled from OEM and government publications, reviewed by our editorial team, and updated regularly.
Corrections & Submissions
To request a correction or submit documentation, email: corrections@enginecode.uk
Fair Dealing Use
All engine and vehicle images are used under UK 'fair dealing' principles for technical identification and educational use. Rights remain with their respective owners.
Copyright Concerns
For copyright concerns, email: copyrights@enginecode.uk
GDPR Compliance
EngineCode.uk complies with UK GDPR. We do not collect personal data unless explicitly provided.
Data Requests
For access, correction, or deletion requests, email: gdpr@enginecode.uk
Trademark Notice
All trademarks, logos, and engine codes are the property of their respective owners. Use on this site is strictly for reference and identification.
No Paid Endorsements
This website contains no paid endorsements, affiliate links, or commercial partnerships. We do not sell parts or services.
Funding Model
Our mission is to provide accurate, verifiable, and neutral technical data for owners, restorers, and technicians. This site is self-funded.
All specifications and compatibility data verified against officialHONDA documentation and EU/UK regulatory texts. Where official data is unavailable, entries are marked “Undisclosed“ .
All external links open in new tabs. Please verify current availability of resources.
