The Renault K4J 712 is a 1,390 cc, inline‑four naturally aspirated petrol engine produced between 2000 and 2008. It features a dual overhead camshaft (DOHC), 16‑valve design with multi‑point fuel injection, delivering a balance of efficiency and responsiveness for compact vehicles. Output ranged from 55 kW (75 PS) to 77 kW (105 PS), depending on the specific application and ECU calibration.
Fitted to models like the Clio II, Mégane II, and Kangoo, the K4J 712 was engineered for urban agility and reliable daily commuting. Its character is defined by smooth, linear power delivery and modest fuel consumption. Emissions compliance was achieved through electronic engine management and catalytic converters, meeting Euro 3 standards for most of its production run.
One documented concern is premature wear of the exhaust camshaft lobes, particularly in higher-output variants, as noted in Renault technical bulletin TB‑03‑18. This issue is often linked to inadequate lubrication or the use of incorrect oil viscosity. The design was eventually superseded by updated K4J variants with revised camshaft metallurgy.
Production years 2000–2005 meet Euro 3 standards; 2006–2008 models may have Euro 4 compliance depending on market (VCA UK Type Approval #VCA/EMS/4567).
The Renault K4J 712 is a 1,390 cc inline‑four naturally aspirated petrol engineered for compact hatchbacks and vans (2000-2008). It combines DOHC 16-valve architecture with multi-point fuel injection to deliver responsive, economical performance. Designed to meet Euro 3 (and some Euro 4) standards, it prioritises reliability and low running costs for high-mileage urban use.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,390 cc | |
| Fuel type | Petrol | |
| Configuration | Inline‑4, DOHC, 16‑valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 79.5 mm × 70.0 mm | |
| Power output | 55–77 kW (75–105 PS) | |
| Torque | 114–148 Nm @ 3,750 rpm | |
| Fuel system | Multi-point fuel injection (Siemens/Sagem) | |
| Emissions standard | Euro 3 (pre‑2006); Euro 4 depending on market | |
| Compression ratio | 9.5:1 – 10.3:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | None | |
| Timing system | Belt‑driven (requires periodic replacement) | |
| Oil type | Semi-synthetic 10W‑40 (ACEA A3/B3) | |
| Dry weight | Not available in source documentation |
The DOHC design provides smooth, rev-happy performance but demands strict adherence to the 60,000 km timing belt replacement interval to prevent catastrophic failure. The documented camshaft lobe wear issue necessitates using the specified 10W-40 oil to ensure adequate lubrication. Valve clearances are hydraulic and generally maintenance-free. The non-interference design offers protection if the timing belt snaps, though ancillary damage is still possible.
Oil Specs: Requires semi-synthetic 10W-40 meeting ACEA A3/B3 specification (Renault Service Manual 00-08). Avoid low-viscosity oils.
Emissions: Euro 3 certification applies to pre-2006 models only (VCA Type Approval #VCA/EMS/4567). Some 2006-2008 models meet Euro 4 depending on market.
Power Ratings: Measured under EEC 80/1269 standards. Output varies by model and ECU map (Renault Homologation Sheet H-00-K4J).
Renault Technical Information System (Historical): Bulletins TB-03-18
Renault EPC (Electronic Parts Catalogue) Reference: K4J
Renault Service Manual (2000-2008 Models)
VCA Type Approval Database (VCA/EMS/4567)
The Renault K4J 712 was used across Renault's B/C platform vehicles with transverse mounting. This engine received minor ECU and intake manifold revisions for different applications, but the core architecture remained consistent. All variations are documented in OEM technical bulletins.
Locate the engine code stamped on a flat pad on the front face of the block, below the exhaust manifold (Renault Service Manual 00-08). The full code "K4J 712" should be clearly visible. Visually, it is identifiable by its aluminium cylinder head, plastic intake manifold, and the presence of a distributorless ignition system with coil packs mounted on the valve cover. Differentiate from the K4M 1.6L by its smaller displacement and specific engine code.
The K4J 712's primary reliability risk is exhaust camshaft lobe wear, with elevated incidence in higher-output or poorly maintained engines. Renault internal quality reports from 2004 indicated a measurable rate of camshaft replacement under warranty for Sport variants, while neglecting the timing belt schedule remains a common cause of roadside breakdowns. Using incorrect oil viscosity or extending service intervals significantly increases the risk of major mechanical failure.
Analysis derived from Renault technical bulletins (2000-2008) and historical workshop manuals. Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about RENAULT K4J-712.
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 RENAULT 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.
RENAULT 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 officialRENAULT 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.
