The Peugeot K9K is a 1,461 cc, inline‑four turbo‑diesel engine produced from 2003 to 2021 under a Renault–Nissan–Mitsubishi alliance license. It features a cast‑iron block, aluminium head, DOHC 8‑valve layout, and common‑rail direct injection with a variable geometry turbocharger. In standard Peugeot applications it delivered 63–81 kW (86–110 PS) and 200–240 Nm of torque, providing strong low‑rpm pulling power for compact vehicles.
Fitted to models such as the Peu…
Production years 2003–2009 meet Euro 4 standards; 2010–2021 models meet Euro 5 standards (VCA UK Type Approval #VCA/EMS/8765).
The Peugeot K9K is a 1,461 cc inline‑four turbo‑diesel engineered for compact hatchbacks and light commercial vehicles (2003–2021). It combines common‑rail direct injection with a single variable‑geometry turbocharger to deliver strong low‑rpm torque and urban drivability. Designed to meet Euro 4 and Euro 5 emissions standards, it balances fuel economy with serviceability.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,461 cc | |
Fuel type | Diesel | |
Configuration | Inline‑4, DOHC, 8‑valve | |
Aspiration | Turbocharged | |
Bore × stroke | 76.0 mm × 80.5 mm | |
Power output | 63–81 kW (86–110 PS) | |
Torque | 200–240 Nm @ 1,500–2,000 rpm | |
Fuel system | Bosch CP1/CP3 common‑rail (up to 1,600 bar) | |
Emissions standard | Euro 4 (2003–2009); Euro 5 (2010–2021) | |
Compression ratio | 15.8:1 | |
Cooling system | Water‑cooled | |
Turbocharger | Single variable‑geometry turbo (Garrett or BorgWarner) | |
Timing system | Belt‑driven DOHC | |
Oil type | ACEA B4 or PSA B71 2290 (SAE 5W‑30) | |
Dry weight | 118 kg |
The Peugeot K9K was used across PSA's PF1 and B platforms with transverse mounting under license from Renault. This engine received platform-specific adaptations—revised engine mounts in the Partner Tepee and modified intake manifolds in the 208—and from 2010 Euro 5 variants incorporated DPF and updated ECU calibrations, creating minor interchange limits. All adaptations are documented in OEM technical bulletins.
The K9K's primary reliability risk is high-pressure fuel pump (HPFP) failure linked to lubrication degradation, with elevated incidence in vehicles using incorrect oil or low-quality diesel. PSA internal data from 2013 noted a significant share of pre-2011 engines requiring HPFP replacement before 100,000 km, while UK DVSA records show DPF-related MOT failures rising in Euro 5 variants subjected to short urban cycles. Extended oil intervals and infrequent highway driving increase risk, making oil quality and driving pattern critical.
Analysis derived from PSA technical bulletins (2008–2016) and UK DVSA failure statistics (2015–2023). 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 K9K offers good urban efficiency but early models (2006–2010) are prone to HPFP failures if incorrect oil or poor-quality diesel is used. Later revisions (post-2011) improved pump durability. With correct ACEA B4 oil, timely belt changes, and regular highway driving (for DPF models), it can be dependable. Avoid extended oil intervals.
HPFP failure (especially pre-2011), timing belt tensioner wear, DPF clogging in Euro 5 variants, and EGR valve carbon buildup are the top issues. These are documented in PSA service bulletins. Oil quality and driving habits heavily influence reliability.
Primarily the Peugeot 207 (2006–2014), 208 (2012–2021), and Partner Tepee (2008–2018) with 1.6 HDi or BlueHDi branding. All are transverse-mounted and licensed from Renault. Euro 4 models lack DPF; Euro 5 variants include it.
Yes. ECU remapping typically yields 120–130 PS reliably on stock internals. Common upgrades include deactivating EGR/DPF (where legally permitted), performance intercooler, and exhaust. HPFP and injectors should be inspected before tuning to ensure health.
Excellent for its class. In a 208 1.6 HDi, typical consumption is ~4.8 L/100km (city) and ~3.4 L/100km (highway), or about 60 mpg UK combined. Real-world figures range 50–65 mpg (UK) depending on model, driving style, and DPF status.
Yes. The K9K is an interference engine. If the timing belt fails or jumps, pistons will contact open valves, causing severe internal damage. Strict adherence to the 120,000 km or 5-year belt replacement interval is essential.
PSA specifies a 5W-30 oil meeting ACEA B4 or PSA B71 2290 standards. Modern C3 or Longlife oils are not suitable. Change every 15,000 km or annually to protect the HPFP and timing components.
Comprehensive technical documentation and regulatory references
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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
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Vehicle Certification Agency (VCA)
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Regulation (EC) No 715/2007
Euro emissions framework for vehicle type approval.
Commission Regulation (EU) 2017/1151
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GOV.UK: Vehicle Approval
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