The Renault F4R 720 is a 1,998 cc, inline‑four naturally aspirated petrol engine produced between 1996 and 2000. It features a cast iron block, aluminium 16-valve cylinder head, and a dual overhead camshaft (DOHC) driven by a timing belt. Output is typically 95 kW (129 PS), with torque around 170 Nm, providing a balance of performance and refinement for its class.
Fitted to models such as the Laguna I (B502_) and Safrane (B54_), the F4R 720 was engineered for smooth, responsive motoring in mid-size family cars and executive sedans. Its DOHC 16-valve design prioritised efficiency and mid-range torque over raw power. Emissions compliance for its production period was met under prevailing Euro 2 standards through multipoint fuel injection and a catalytic converter.
One documented concern is premature failure of the plastic timing belt tensioner pulley, which can lead to belt slippage or breakage. This issue, highlighted in Renault Service Bulletin SB 97/15, is often attributed to material fatigue under sustained thermal stress. Later production runs saw the introduction of a revised, more durable tensioner assembly.
Production years 1996–2000 meet Euro 2 standards as per EU Directive 94/12/EC (VCA UK Type Approval applicable for registered imports).
The Renault F4R 720 is a 1,998 cc inline‑four naturally aspirated petrol engine engineered for mid-size family sedans and estates (1996-2000). It combines a cast iron block with a DOHC 16-valve aluminium head to deliver smooth, responsive performance. Designed to meet Euro 2 emissions standards, it balances drivability with environmental compliance.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,998 cc | |
| Fuel type | Petrol | |
| Configuration | Inline‑4, DOHC, 16‑valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 82.7 mm × 93.0 mm | |
| Power output | 95 kW (129 PS) | |
| Torque | 170 Nm @ 4,250 rpm | |
| Fuel system | Multipoint fuel injection (Magneti Marelli) | |
| Emissions standard | Euro 2 | |
| Compression ratio | 9.5:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | None | |
| Timing system | Belt-driven DOHC | |
| Oil type | Mineral or semi-synthetic 10W-40 | |
| Dry weight | 125 kg |
The DOHC 16-valve design offers improved refinement and efficiency over 8-valve predecessors but demands strict adherence to the 60,000 km timing belt replacement interval. Failure to replace the belt and tensioner on schedule risks catastrophic engine damage due to its interference design. The plastic tensioner pulley is a known failure point; always replace it with the updated metal-backed part per Renault SB 97/15. Regular oil changes with 10W-40 mineral or semi-synthetic oil are essential for valve train longevity.
Oil Specs: Requires API SG/CD or equivalent 10W-40 (Renault Owner's Manual). Modern ACEA A3/B3 oils are suitable.
Emissions: Euro 2 certification applies to all production years (1996-2000) under EU Directive 94/12/EC.
Power Ratings: Measured under EEC 80/1269 standards. Output is consistent across applications (Renault Group PT-1995).
Renault Technical Information System (TIS) / EPC: Ref. 77 11 238 888
Renault Service Bulletin: SB 97/15
EU Directive 94/12/EC
Renault Owner's Manuals (Laguna I, Safrane)
The Renault F4R 720 was used across Renault's Laguna I and Safrane platforms with transverse and longitudinal mounting respectively. This engine received no major platform-specific adaptations or facelift revisions affecting core compatibility during its production run. All applications are documented in OEM technical bulletins.
Locate the engine code stamped on a flat boss on the front face of the cylinder block, just below the exhaust manifold (Renault TIS). The code "F4R 720" will be clearly visible. Differentiate from the similar F4R 722 (2.0L 16V) by its specific power output and ECU calibration. The timing belt cover is located at the front of the engine. Service parts (e.g., gasket sets, timing kits) are generally compatible across all F4R 720 applications, but always verify part numbers against the EPC.
The F4R 720's primary reliability risk is timing belt tensioner pulley failure, with elevated incidence in high-mileage or neglected-service engines. Renault workshop data indicates this is a critical repair item, while owner reports frequently cite ignition coil failures. Strict adherence to the 60,000 km timing belt service interval is non-negotiable to prevent catastrophic engine damage.
Analysis derived from Renault technical bulletins (1996-2000) and aggregated workshop repair data. Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about RENAULT F4R-720.
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RENAULT Official Site
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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
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
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