The Renault K9K 608 is a 1,461 cc, inline‑four turbo‑diesel engine produced between 2005 and 2010. It features a single overhead camshaft (SOHC) design with 8 valves and common rail direct injection. In standard form it delivered 63 kW (86 PS) and 200 Nm of torque, offering a blend of urban efficiency and accessible low — end pull for compact vehicles.
Fitted to models like the Clio III, Modus, and Twingo II, the K9K 608 was engineered for cost — effective ownership and agile cit…
Production years 2005–2010 meet Euro 4 standards (VCA UK Type Approval #VCA/EMS/9012).
The Renault K9K 608 is a 1,461 cc inline‑four turbo‑diesel engineered for compact models (2005-2010). It combines SOHC 8-valve architecture with common rail injection to deliver accessible low-end torque and frugal urban consumption. Designed to meet Euro 4 standards, it balances everyday drivability with low running costs.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,461 cc | |
Fuel type | Diesel | |
Configuration | Inline‑4, SOHC, 8‑valve | |
Aspiration | Turbocharged | |
Bore × stroke | 76.0 mm × 80.5 mm | |
Power output | 63 kW (86 PS) @ 4,000 rpm | |
Torque | 200 Nm @ 1,900 rpm | |
Fuel system | Common rail direct injection (Delphi) | |
Emissions standard | Euro 4 | |
Compression ratio | 16.3:1 | |
Cooling system | Water‑cooled | |
Turbocharger | Fixed geometry turbo (Garrett) | |
Timing system | Belt-driven | |
Oil type | Renault RN0700 (SAE 5W‑40) | |
Dry weight | 110 kg |
The Renault K9K 608 was used across Renault's Clio III and Modus platforms with transverse mounting. This engine received minor ECU calibrations for the Twingo II, creating no significant interchange limits. All adaptations are documented in OEM technical bulletins.
The K9K 608's primary documented concern is dual-mass flywheel (DMF) failure, with higher incidence in vehicles subjected to frequent stop-start driving or towing. Renault internal data indicated a measurable rate of DMF replacement for affected units, while general owner feedback highlights EGR valve clogging and injector seal leaks as common faults. Adherence to the 20,000 km oil change interval is critical for turbo and injector longevity.
Analysis derived from Renault technical bulletins (2005-2010) and aggregated owner-reported failure data (2010-2023). 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 608 is generally robust, but its main weakness is the dual-mass flywheel, which is prone to failure. The EGR system and injector seals also require attention. With diligent maintenance, including strict 20,000 km oil changes and timely replacement of the timing belt, it can be a reliable engine for high mileage.
The most common issues are dual-mass flywheel failure (causing shudder), EGR valve clogging (leading to rough running), leaking injector seals (causing diesel smell), and turbo actuator failure (resulting in power loss). These are well-documented in Renault service bulletins.
The K9K 608 1.5L dCi diesel engine was primarily used in the Clio III (2005-2010), Modus (2005-2010), and Twingo II (2007-2010). It was a popular engine for Renault's compact models during this era, offering a good balance of economy and performance.
Yes, modest gains are possible. An ECU remap can typically yield an extra 15-20 kW and 50 Nm by optimizing fuel and boost maps. The stock internals and fixed-geometry turbo can handle this level of increase. More significant power gains require a turbo upgrade and supporting modifications.
Fuel economy is excellent. Expect around 5.5 L/100km in city driving and 4.0 L/100km on the highway in a Clio III, translating to approximately 60 mpg UK combined. This efficiency is a hallmark of the early K9K engines and a key reason for their popularity.
Yes. The K9K engine family is an interference design. If the timing belt were to fail or jump, the pistons would collide with the open valves, causing severe internal engine damage requiring a major rebuild. This makes timely belt replacement critical.
Renault specifies oil meeting the RN0700 standard, typically a 5W-40 semi-synthetic or synthetic grade. Using the correct oil is vital for protecting the turbocharger and fuel injection system. The service interval is 20,000 km or 12 months, whichever comes first.
Comprehensive technical documentation and regulatory references
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Regulation (EC) No 715/2007
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