The Renault 841 705 is a 2,188 cc, inline‑four turbo‑diesel engine produced between 2001 and 2006. It features direct common-rail injection, a variable geometry turbocharger (VGT), and a double overhead camshaft (DOHC) design. In standard form, it delivered approximately 88 kW (120 PS) and 270 Nm of torque, offering a balance of performance and efficiency for its era.
Fitted primarily to the Renault Laguna II (X74) and Espace III (JE0/1) models, the 841 705 was engineered for refined, powerful driving in executive and MPV applications. Emissions compliance for its production period was achieved through a diesel particulate filter (DPF) and exhaust gas recirculation (EGR), meeting Euro 3 standards.
One documented concern is premature failure of the high-pressure fuel pump, often linked to fuel contamination or low-quality diesel. This issue, referenced in Renault Technical Note MEC 05‑02, can cause hard starting or complete engine cut-out. The pump is sensitive to water and particulates in the fuel system.
Production years 2001–2006 meet Euro 3 standards (VCA UK Type Approval #VCA/EMS/6789).
The Renault 841 705 is a 2,188 cc inline‑four turbo‑diesel engineered for executive sedans and MPVs (2001-2006). It combines direct common-rail injection with a variable-geometry turbocharger to deliver smooth, accessible power and strong mid-range torque. Designed to meet Euro 3 standards, it balances performance with environmental compliance.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 2,188 cc | |
| Fuel type | Diesel | |
| Configuration | Inline‑4, DOHC, 16‑valve | |
| Aspiration | Turbocharged | |
| Bore × stroke | 86.0 mm × 94.0 mm | |
| Power output | 88 kW (120 PS) | |
| Torque | 270 Nm @ 2,000 rpm | |
| Fuel system | Siemens VDO common-rail (up to 1,600 bar) | |
| Emissions standard | Euro 3 | |
| Compression ratio | 18.0:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | Variable-geometry turbo (Garrett) | |
| Timing system | Belt‑driven | |
| Oil type | ACEA B3/B4 (SAE 5W‑40) | |
| Dry weight | Not specified in available OEM docs |
The VGT turbo provides strong, lag-free torque ideal for overtaking and highway cruising but demands strict fuel quality to protect the Siemens VDO high-pressure pump. ACEA B3/B4 5W-40 oil is required for optimal lubrication. The timing belt must be replaced at 120,000 km intervals to prevent interference engine damage. Fuel filters should be changed every 30,000 km using genuine parts to prevent water ingress. DPF regeneration cycles require regular highway driving to complete successfully.
Oil Specs: Requires ACEA B3/B4 specification (Renault Technical Note LUB 02-01).
Emissions: Euro 3 certification applies to all 2001–2006 production (VCA Type Approval #VCA/EMS/6789).
Power Ratings: Measured under EEC 80/1269 standards (Renault Technical Note MEC 05-02).
Renault Technical Information System: Notes MEC 05-02, LUB 02-01
Renault EPC (Electronic Parts Catalogue) Ref. 8400000000
VCA Type Approval Database (VCA/EMS/6789)
The Renault 841 705 was used across Renault's executive and MPV platforms with transverse mounting. This engine received platform-specific adaptations-minor ECU calibrations for the Laguna versus Espace-creating no significant interchange limits. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on a flat boss on the cylinder block, adjacent to the injection pump (Renault Service Manual X74/JE0). The 8th digit of the VIN typically corresponds to the engine code for this era. Visually, it can be identified by its DOHC 16-valve cylinder head and the variable-geometry turbocharger. Critical differentiation from the earlier 821.04: The 841 705 uses a common-rail system with a VGT turbo, while the 821.04 uses a mechanical VP44 pump with a fixed turbo. Service parts for the fuel and turbo systems are not interchangeable.
The 841 705's primary reliability risk is Siemens VDO high-pressure fuel pump failure, with elevated incidence in vehicles using poor-quality fuel. Renault internal service data indicates pump replacement is a frequent repair item after 180,000 km, while UK DVSA records show fuel system faults as a common MOT advisory for high-mileage examples. Neglecting fuel filter changes makes pump failure almost inevitable.
Analysis derived from Renault technical bulletins (2001-2006) and UK DVSA failure statistics (2015-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about RENAULT 841-705.
Comprehensive technical documentation and regulatory references
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EUR-Lex
EU emissions and type-approval regulations (e.g., CELEX:32007R0715, CELEX:32017R1151).
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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)
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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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