The Peugeot RHY (DW10TD) is a 1,997 cc, inline‑four turbo‑diesel engine produced between 2006 and 2010. It features a dual overhead camshaft (DOHC) design with 16 valves and high — pressure common rail direct injection, delivering 100 kW (136 PS) and 320 Nm of torque. Its cast‑iron block and aluminium cylinder head construction provide a balance of durability and thermal efficiency for everyday driving.
Fitted to popular models like the 407, 607, and C5, the RHY engine was…
Production years 2006–2010 meet Euro 4 standards .
The Peugeot RHY (DW10TD) is a 1,997 cc inline‑four turbo‑diesel engineered for mid-size sedans and estates (2006-2010). It combines DOHC 16-valve architecture with a fixed-geometry turbocharger and high-pressure common rail injection to deliver strong, accessible torque and efficient long-distance performance. Designed to meet Euro 4 standards, it integrates emissions after-treatment for regulatory compliance.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,997 cc | |
Fuel type | Diesel | |
Configuration | Inline‑4, DOHC, 16‑valve | |
Aspiration | Turbocharged | |
Bore × stroke | 85.0 mm × 88.0 mm | |
Power output | 100 kW (136 PS) @ 4,000 rpm | |
Torque | 320 Nm @ 2,000 rpm | |
Fuel system | High-pressure common rail (Bosch CP3, up to 1,600 bar) | |
Emissions standard | Euro 4 | |
Compression ratio | 16.0:1 | |
Cooling system | Water‑cooled | |
Turbocharger | Single fixed‑geometry turbo (Garrett) | |
Timing system | Chain-driven (front-mounted) | |
Oil type | PSA B71 2290 (SAE 5W‑40) | |
Dry weight | 155 kg |
The Peugeot RHY (DW10TD) was used across Peugeot's D-segment platforms with transverse mounting. This engine received platform-specific adaptations-different ECU mappings for the 407 and 607-and shared its core architecture with the Citroën C5. All adaptations are documented in OEM technical bulletins.
Engine Finders UK Ltd, which operates EngineCode.uk, can pass your enquiry to engine suppliers in the UK. The service is for vehicles in the United Kingdom, with UK delivery or fitting. This is a commercially connected service, and sending an enquiry does not confirm diagnosis or compatibility.
Diagnostic reminder: If a technician has recommended replacing the engine, you can send an enquiry to engine suppliers in the UK. Confirm the diagnosis first: an engine-code record does not diagnose a fault.
Field reports and technical service bulletins highlight component wear patterns under high-load operation. Adherence to manufacturer service intervals and approved fluid specifications is critical for long-term reliability.
Analysis derived from manufacturer technical service bulletins and industry workshop records. 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
The RHY is generally robust but requires diligent maintenance, particularly for the EGR system and DPF. Engines that have been well-maintained with high-quality fuel and timely filter changes can be very reliable. Neglect, especially of the EGR cooler and DPF, leads to expensive failures.
The most critical issues are EGR cooler failure (leading to coolant contamination), DPF saturation, fuel injector failure, and turbo actuator wear. These are well-documented in Peugeot service bulletins and owner reports, often linked to driving patterns and fuel quality.
This 2.0L diesel engine was used in the Peugeot 407 (2006-2010), 607 (2006-2010), and was also shared with Citroën, appearing in the C5 (2006-2010) models, typically badged as 2.0 HDi 136.
Yes. The RHY responds well to ECU remapping, typically gaining 20-25 kW (27-34 PS) and improved torque. The stock internals and turbo are robust enough for moderate tuning. Pushing power significantly higher requires upgraded injectors and potentially a larger intercooler.
Fuel economy is excellent. In a Peugeot 407, expect around 6.0 L/100km (47 mpg UK) in combined driving. In the heavier 607, figures are closer to 6.5-7.0 L/100km (40-43 mpg UK). Real-world economy depends heavily on driving style and DPF regeneration cycles.
Yes. The RHY is an interference engine. If the timing chain fails or jumps teeth (though rare), the pistons will collide with the open valves, causing severe and expensive internal engine damage. Fortunately, the chain system is generally very durable.
Peugeot specifies oil meeting the PSA B71 2290 standard, typically a 5W-40 fully synthetic oil. Using the correct specification is vital for protecting the engine and ensuring proper lubrication of the turbocharger and chain.
Comprehensive technical documentation and regulatory references
EngineCode.uk is operated by Engine Finders UK Ltd. It provides engine-reference information and an optional commercial enquiry service. It is not an official manufacturer website. Check the record's sources and confirm vehicle-specific details before relying on it for parts, repairs or replacement.
Our editorial standard prioritises relevant manufacturer documentation and official regulatory sources. The sources and verification status for a record should be checked alongside the data.
A statement is not verified merely because a source is listed. Where supporting evidence is missing or conflicting, the record should identify that limitation. Please report unsupported or inconsistent information.
Transparency in gaps
A missing or unverified value does not mean the manufacturer has withheld it. We distinguish information not yet verified, information not available to us, and information explicitly not disclosed by the source.
Regulatory Stability
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.
Records are subject to review and correction. Source links, dates and verification notes should be read with the technical information. Our Editorial and Sourcing Policy explains our standards and review process.
Found an error or missing source? Report a problem with this page. Include the field or statement concerned and a supporting source if available. You can also email corrections@enginecode.uk.
Copyright and permissions
Images and other material may be protected by copyright. Attribution does not by itself grant permission to reuse material. If you believe material on this site infringes your rights, contact copyrights@enginecode.uk with the page URL and details of your claim. We will review the material and take appropriate action.
Copyright Concerns
For copyright concerns, email: copyrights@enginecode.uk
Our Privacy Policy explains how Engine Finders UK Ltd uses information from visits, vehicle lookups, enquiries and messages. Our Cookie Policy explains cookies and similar technologies and how to change your choices.
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.
Ownership and commercial services
EngineCode.uk is owned and operated by Engine Finders UK Ltd. Alongside our reference content, we offer an optional replacement-engine enquiry service through Engine Finders and may identify relevant services provided by businesses connected with us. These commercial connections are disclosed. Using an enquiry service is not required to read our reference content.
Engine Finders UK Ltd operates this website. Our optional enquiry service has a commercial purpose. Our Ownership and Commercial Disclosure explains the relationship between the reference website and that service. Participating suppliers pay a fee or subscription to participate on the network and receive quote requests.
Use this record as a starting point for identification. Specifications and vehicle applications may contain errors or omissions. Confirm the exact engine variant and compatibility using vehicle-specific documentation and a qualified supplier or technician.
All external links open in new tabs. Please verify current availability of resources.