The Renault F3R 723 is a 1,995 cc, inline‑four petrol engine produced between 1989 and 1996. It features a cast iron block, aluminium cylinder head, and a single overhead camshaft (SOHC) with two valves per cylinder. In standard form, it delivered approximately 82 kW (110 PS) and 160 Nm of torque, providing adequate performance for its era. Its simple, robust design prioritised reliability and ease of maintenance for everyday drivability.
Fitted to models such as the Renault 21 and Renault Laguna MkI, the F3R 723 was engineered for dependable, economical transportation. It offered a smooth, linear power delivery suited to motorway cruising and urban commuting. Emissions compliance for its production period was managed through basic engine management and exhaust systems, meeting the prevailing standards of the early 1990s.
One documented concern is premature wear of the timing belt tensioner pulley, which can lead to belt failure and severe engine damage if not replaced proactively. This issue is referenced in Renault's technical service bulletins for the period. The engine's non-interference design, however, mitigates the risk of catastrophic internal damage in the event of a timing belt break.
Production years 1989–1996 meet the emissions standards applicable in the European Economic Community for that period (EEC Directive 88/77/EEC).
The Renault F3R 723 is a 1,995 cc inline‑four petrol engine engineered for mid‑size sedans and estates (1989-1996). It combines a robust cast iron block with a simple SOHC valvetrain to deliver dependable, linear power. Designed to meet the emissions regulations of its era, it prioritises mechanical simplicity and serviceability over peak performance.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,995 cc | |
| Fuel type | Petrol | |
| Configuration | Inline‑4, SOHC, 8‑valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 82.7 mm × 93.0 mm | |
| Power output | 82 kW (110 PS) @ 5,500 rpm | |
| Torque | 160 Nm @ 3,000 rpm | |
| Fuel system | Multi-point fuel injection | |
| Emissions standard | EEC 88/77/EEC | |
| Compression ratio | 9.5:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | None | |
| Timing system | Belt-driven | |
| Oil type | SAE 10W-40 (mineral or semi-synthetic) | |
| Dry weight | Not available in OEM documentation |
The SOHC design provides smooth, predictable power ideal for relaxed cruising but lacks the high-RPM performance of DOHC engines. Strict adherence to the 60,000 km timing belt replacement interval is critical to prevent failure, despite the non-interference design. Using the specified 10W-40 oil ensures proper lubrication of the older valvetrain components. The engine's simplicity makes it relatively easy and inexpensive to service for competent DIY mechanics.
Oil Specs: Requires SAE 10W-40 mineral or semi-synthetic oil (Renault Owner's Manual). ACEA A3 specification is suitable.
Emissions: Compliance with EEC 88/77/EEC applies to all production years (European Commission Directive 88/77/EEC).
Power Ratings: Measured under EEC 80/1269 standards (European Commission Directive 80/1269/EEC).
Renault Technical Workshop Manual: F3R Engine
Renault EPC (Electronic Parts Catalogue)
Renault Owner's Manual: Renault 21/Laguna
European Commission: Directives 88/77/EEC, 80/1269/EEC
The Renault F3R 723 was used across Renault's R21 and Laguna platforms with longitudinal mounting. This engine received platform-specific adaptations-such as different intake manifolds and engine mounts-and was succeeded by the more advanced F4R engine, creating clear generational boundaries. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the flat machined surface at the front of the cylinder block, near the gearbox flange. The full code "F3R 723" should be clearly visible. Visually, it can be identified by its single camshaft cover and distributor-based ignition system (on early models) or coil packs (on later models). It is distinct from the smaller F2R (1.7L) and the larger, 16-valve F7R engines. Always verify the code stamping, as visual identification alone can be misleading.
The F3R 723's primary reliability risk is timing belt and tensioner failure due to age and mileage. Renault service data from the 1990s indicated a high correlation between missed belt changes and roadside breakdowns. While the non-interference design prevents engine destruction, neglecting this service makes unexpected immobilisation critical.
Analysis derived from Renault technical bulletins (1989-1996) and owner workshop manuals. Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about RENAULT F3R-723.
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Regulation (EC) No 715/2007
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Commission Regulation (EU) 2017/1151
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