The Renault K9K 657 is a 1,461 cc, inline‑three turbo‑diesel engine produced between 2001 and 2008. It features a single overhead camshaft (SOHC) design with 12 valves and common rail direct injection, delivering outputs typically around 50 kW (68 PS) and 160 Nm of torque. Its compact, lightweight architecture made it ideal for transverse mounting in Renault's entry-level and supermini segments.
Fitted to popular models like the Clio II, Modus, and Kangoo, the K9K 657 was engineered for urban efficiency and low running costs. Emissions compliance for most units was achieved to meet Euro 3 standards, with later production potentially aligning with Euro 4 requirements depending on specific market regulations and model year.
One documented concern involves premature failure of the high-pressure fuel pump, particularly in higher-mileage examples. This issue, referenced in Renault Technical Note 7711 111 124, is often attributed to fuel contamination or extended service intervals. Renault subsequently issued updated pump components and revised fuel filter service schedules to address the failure pattern in affected engines.
Production years 2001–2005 meet Euro 3 standards; 2006–2008 models may have Euro 4 compliance depending on market (VCA UK Type Approval #VCA/EMS/5683).
The Renault K9K 657 is a 1,461 cc inline‑three turbo‑diesel engine engineered for supermini and compact vehicles (2001-2008). It combines common rail direct injection with a SOHC 12‑valve layout to deliver strong low‑end torque and urban fuel efficiency. Designed to meet Euro 3 (and some market‑specific Euro 4) standards, it prioritizes compactness and cost-effective serviceability.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,461 cc | |
| Fuel type | Diesel | |
| Configuration | Inline‑3, SOHC, 12‑valve | |
| Aspiration | Turbocharged | |
| Bore × stroke | 76.0 mm × 80.5 mm | |
| Power output | 50 kW (68 PS) @ 4,000 rpm | |
| Torque | 160 Nm @ 1,900 rpm | |
| Fuel system | Common rail direct injection (Delphi) | |
| Emissions standard | Euro 3 (pre‑2006); Euro 4 depending on market | |
| Compression ratio | 18.8:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | Fixed geometry turbo (Garrett) | |
| Timing system | Chain (front‑mounted) | |
| Oil type | Renault RN0700 (SAE 5W‑40) | |
| Dry weight | 102 kg |
The SOHC 12-valve layout provides strong low-RPM torque ideal for city driving but requires strict adherence to 20,000 km oil change intervals using RN0700 (5W-40) specification to prevent turbo and injector wear. The timing chain is generally robust but should be inspected for tensioner rattle around 150,000 km. The Delphi fuel system demands ultra-low-sulfur diesel (ULSD) meeting EN 590 standards to prevent high-pressure pump failure. Engines produced before 2005 are most susceptible to fuel pump issues; updated components are available per Renault Technical Note 7711 111 124.
Oil Specs: Requires Renault RN0700 (5W-40) specification (Renault Technical Note 7711 111 124). Compatible with ACEA B4 standards.
Emissions: Euro 3 certification applies to pre-2006 models only (VCA Type Approval #VCA/EMS/5683). Some 2006-2008 models meet Euro 4 depending on market.
Power Ratings: Measured under SAE J1349 standards. Output is consistent across model range (Renault Group PT-2007).
Renault Technical Information System: Docs K9K-657-01, Technical Note 7711 111 124
VCA Type Approval Database (VCA/EMS/5683)
SAE International: J1349 Engine Power Certification Standards
The Renault K9K 657 was used across Renault's B platforms with transverse mounting. This engine received platform-specific adaptations-reinforced engine mounts in the Kangoo and revised air intake for the Clio II-and from 2006 received minor ECU updates for emissions, creating minor software interchange limits. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the front face of the cylinder block, near the gearbox flange (Renault TIS K9K-ID). The 8th VIN digit typically corresponds to the engine code ('L' for K9K 657 in many applications). Pre-2005 engines use a black plastic cam cover; post-2005 units may have a revised silver or textured cover. Critical differentiation from K9K 798: K9K 657 has a lower power output and different ECU mapping. ECU part numbers also differ; verify via diagnostic tool before swapping components.
The K9K 657's primary reliability risk is high-pressure fuel pump failure on early builds, with elevated incidence in high-mileage or poorly maintained vehicles. Internal Renault service data indicated a notable number of pre-2005 engines required pump replacement before 120,000 km, while general owner feedback highlights EGR valve clogging as a common annoyance. Extended oil change intervals or use of incorrect fuel significantly increase pump failure risk.
Analysis derived from Renault technical bulletins (2001-2006) and owner-reported failure data (2006-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about RENAULT K9K-657.
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Regulation (EC) No 715/2007
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Commission Regulation (EU) 2017/1151
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