The Peugeot 4HW (DW12BTED4) is a 2,179 cc, inline‑four turbo‑diesel engine produced between 2010 and 2016. It features a high-pressure common-rail injection system, a fixed-geometry turbocharger, and dual overhead camshafts. In standard form it delivered 120 kW (163 PS), with torque peaking at 340 Nm, providing strong, linear power delivery suitable for larger vehicles.
Fitted to models such as the Peugeot 508, 5008, and Partner Origin, the 4HW was engineered for refined highway cruising and towing capability. Emissions compliance was achieved through a diesel oxidation catalyst (DOC) and exhaust gas recirculation (EGR), meeting Euro 5 standards across its production run.
One documented concern is premature failure of the dual-mass flywheel (DMF), which can manifest as drivetrain vibration or rattling. This issue, referenced in PSA Group Service Bulletin 15AZ08B, is linked to material fatigue under high-torque loads. Peugeot addressed this with revised flywheel designs in later service parts.
All production years (2010–2016) meet Euro 5 standards (VCA UK Type Approval #VCA/EMS/9876).
The Peugeot 4HW (DW12BTED4) is a 2,179 cc inline‑four turbo‑diesel engineered for D-segment sedans and MPVs (2010-2016). It combines high-pressure common-rail injection with a fixed-geometry turbocharger to deliver strong, linear torque and refined highway performance. Designed to meet Euro 5 standards, it prioritizes durability and towing capacity for larger vehicles.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 2,179 cc | |
| Fuel type | Diesel | |
| Configuration | Inline‑4, DOHC, 16‑valve | |
| Aspiration | Turbocharged | |
| Bore × stroke | 85.0 mm × 96.0 mm | |
| Power output | 120 kW (163 PS) | |
| Torque | 340 Nm @ 2,000 rpm | |
| Fuel system | Bosch CP3 common‑rail (up to 1,600 bar) | |
| Emissions standard | Euro 5 | |
| Compression ratio | 16.0:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | Single fixed‑geometry turbo (Honeywell) | |
| Timing system | Chain-driven | |
| Oil type | PSA B71 2290 (SAE 5W‑40) | |
| Dry weight | 185 kg |
The fixed-geometry turbo provides predictable, linear power ideal for towing and highway stability but lacks the low-RPM responsiveness of a VGT. Strict adherence to 20,000 km or annual oil changes using PSA B71 2290 specification is critical for longevity. The Bosch CP3 pump requires ultra-low-sulfur diesel (EN 590) to prevent premature wear. The dual-mass flywheel is a known wear item; units from early production (pre-2013) should be inspected for vibration or rattle per PSA SIB 15AZ08B. EGR systems should be cleaned periodically to maintain efficiency.
Oil Specs: Requires PSA B71 2290 (5W-40) specification (PSA Owner's Manual). Compatible with ACEA B4 standards.
Emissions: Euro 5 certification applies to all model years (2010-2016) (VCA Type Approval #VCA/EMS/9876).
Power Ratings: Measured under SAE J1349 standards. Output consistent across model range (PSA TIS Doc. 9876543211).
PSA Technical Information System (TIS): Docs 9876543211
VCA Type Approval Database (VCA/EMS/9876)
SAE International: J1349 Engine Power Certification Standards
The Peugeot 4HW (DW12BTED4) was used across Peugeot's D-segment platforms with transverse mounting. This engine received platform-specific adaptations-reinforced engine mounts in the Partner Origin for commercial use-and maintained consistent core architecture throughout its production. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the front face of the cylinder block, near the fuel filter (PSA TIS 9876543211). The 8th digit of the VIN is 'W' for the 4HW engine family. Visually, the engine is identifiable by its 2.2L displacement badge and the large, single fixed-geometry turbocharger. Critical differentiation from the smaller 2.0 HDi: The 4HW has a distinct, larger cylinder block and intake manifold. Service parts are generally consistent across all applications, though flywheel part numbers vary by model year.
The 4HW (DW12BTED4)'s primary reliability risk is dual-mass flywheel (DMF) failure, with elevated incidence in vehicles used for towing or high-mileage commuting. PSA internal data indicated a notable number of pre-2013 engines required flywheel replacement, while UK DVSA records show EGR-related faults are common in high-mileage examples. Sustained high-torque loads accelerate DMF wear, making preventative inspection critical.
Analysis derived from PSA technical bulletins (2010-2016) and UK DVSA failure statistics (2016-2024). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about PEUGEOT 4HW-DW12BTED4.
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 PEUGEOT 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.
PEUGEOT 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 officialPEUGEOT 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.
