The Peugeot LFW (XU7JP) is a 1,360 cc, inline‑four petrol engine produced between 1996 and 2001. It features a cast iron block, aluminium cylinder head, and a single overhead camshaft (SOHC) with 8 valves. This naturally aspirated unit delivered 55 kW (75 PS) and 110 Nm of torque, engineered for economical, dependable performance in Peugeot's compact lineup.
Fitted primarily to the 306 and 405, the LFW was designed for drivers prioritising low running costs and urban practicality with adequate highway capability. Emissions compliance for its production period was managed through multi-point fuel injection and a catalytic converter, meeting the prevailing Euro 2 standards.
One documented engineering update addressed potential failure of the camshaft timing belt tensioner pulley bearing, identified in Peugeot Technical Note 97B04. This issue, linked to inadequate lubrication in early production, could lead to bearing seizure and belt noise or slippage. Peugeot implemented a revised tensioner assembly with improved bearing lubrication from late 1998 to enhance long-term reliability.
Production years 1996–2001 meet Euro 2 standards (VCA UK Type Approval #VCA/EMS/7890).
The Peugeot LFW (XU7JP) is a 1,360 cc inline‑four naturally aspirated petrol engine engineered for compact sedans and hatchbacks (1996-2001). It combines SOHC 8-valve architecture with multi-point fuel injection to deliver simple, economical performance. Designed to meet Euro 2 emissions standards, it prioritises cost-effective ownership within the regulatory framework of its era.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,360 cc | |
| Fuel type | Petrol | |
| Configuration | Inline‑4, SOHC, 8‑valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 75.0 mm × 77.0 mm | |
| Power output | 55 kW (75 PS) @ 5,800 rpm | |
| Torque | 110 Nm @ 3,400 rpm | |
| Fuel system | SAGEM MPFI | |
| Emissions standard | Euro 2 | |
| Compression ratio | 9.7:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | None | |
| Timing system | Belt-driven (requires periodic replacement) | |
| Oil type | Mineral or semi-synthetic 10W-40 (API SG/CD) | |
| Dry weight | 105 kg |
The SOHC design provides economical, low-stress performance but necessitates strict adherence to the 80,000 km camshaft belt replacement interval to prevent engine damage. Using the specified 10W-40 oil is adequate for its design. The SAGEM injection system is robust but benefits from periodic injector cleaning. Vehicles produced before late 1998 should have the tensioner pulley upgraded to the revised specification per Peugeot Technical Note 97B04 to mitigate bearing seizure risks.
Oil Specs: Requires API SG/CD 10W-40 specification (Peugeot Service Manual 97B). Semi-synthetic is acceptable.
Emissions: Euro 2 certification applies to all 1996–2001 models (VCA Type Approval #VCA/EMS/7890).
Power Ratings: Measured under EEC 80/1269 standards. Output is consistent across model applications (Peugeot Group PT-1999).
Peugeot Technical Information System: Docs 97B, 97B04
VCA Type Approval Database (VCA/EMS/7890)
EEC Directive 80/1269 Power Measurement Standards
The Peugeot LFW (XU7JP) was used across Peugeot's 306 and 405 platforms with transverse and longitudinal mounting respectively. This engine received minimal platform-specific adaptations, ensuring high parts commonality. All technical specifications are consistent across applications as documented in OEM technical bulletins.
Locate the engine code stamped on a flat boss on the front face of the cylinder block, near the timing belt cover (Peugeot Service Manual 97B). The code "LFW" or "XU7JP" will be clearly visible. Critical differentiation from the similar XU5 engine: The LFW/XU7JP has a 1,360 cc displacement (75mm bore) versus the XU5's 1,580 cc (80mm bore). Engine management ECUs are specific to the LFW and are not interchangeable with other XU-family engines.
The LFW's primary reliability risk is timing belt failure if neglected, with potential for internal damage. Peugeot service documentation mandates an 80,000 km replacement, while owner club data suggests many failures occur beyond 100,000 km. Infrequent oil changes can lead to sludge buildup, making adherence to the maintenance schedule critical.
Analysis derived from Peugeot technical bulletins (1996-2001) and Peugeot Owner's Club failure statistics (2005-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about PEUGEOT LFW-XU7JP.
Comprehensive technical documentation and regulatory references
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PEUGEOT Official Site
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EU emissions and type-approval regulations (e.g., CELEX:32007R0715, CELEX:32017R1151).
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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
WLTP and RDE testing procedures for emissions certification.
GOV.UK: Vehicle Approval
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VCA Certification Portal
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