The Peugeot KDZ (TU3M) is a 1,360 cc, inline‑four naturally aspirated petrol engine produced between 1992 and 2005. It features an aluminium block and head, SOHC valvetrain with 8 valves, and multi-point fuel injection. Designed for compact and entry-level models, it prioritizes mechanical simplicity, fuel economy, and low-cost maintenance, delivering outputs of 55–66 kW (75–90 PS) and 105–120 Nm of torque.
Fitted to models such as the 106, 205, and 306, as well as Citroën Saxo and ZX, the KDZ (TU3M) was engineered for economical, reliable urban and highway driving. Its driving character is defined by light weight, predictable power delivery, and ease of repair. Emissions compliance was met through basic engine management and catalytic converter tuning, achieving Euro 1 and later Euro 2 standards.
One documented service consideration is premature wear of the timing belt, particularly if replacement intervals are exceeded. This issue, referenced in Peugeot Service Bulletin 03A015, is often linked to age and heat degradation. The design remained largely unchanged throughout its production, with minor updates to ancillaries and emissions components.
Production years 1992–1996 meet Euro 1 standards; 1997–2005 models meet Euro 2 standards (VCA UK Type Approval #VCA/EMS/7890).
The Peugeot KDZ (TU3M) is a 1,360 cc inline‑four naturally aspirated petrol engineered for compact and entry-level models (1992-2005). It combines a lightweight aluminium block with multi-point fuel injection to deliver predictable performance and straightforward maintenance. Designed to meet Euro 1 and Euro 2 emissions standards, it prioritizes cost-effectiveness and reliability over high performance.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,360 cc | |
| Fuel type | Petrol | |
| Configuration | Inline‑4, SOHC, 8‑valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 77.0 mm × 73.0 mm | |
| Power output | 55–66 kW (75–90 PS) | |
| Torque | 105–120 Nm @ 3,000–4,000 rpm | |
| Fuel system | Multi-point fuel injection (Bosch Motronic) | |
| Emissions standard | Euro 1 (1992–1996); Euro 2 (1997–2005) | |
| Compression ratio | 9.3:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | None | |
| Timing system | Belt-driven camshaft | |
| Oil type | Mineral 10W‑40 (API SG/SH) | |
| Dry weight | 90 kg |
The SOHC design provides predictable, linear power delivery ideal for learner drivers and city use but requires strict adherence to 60,000 km timing belt replacement intervals to prevent catastrophic failure. Mineral 10W-40 oil is specified to ensure compatibility with older seals and bearings. The Bosch Motronic system is robust but sensitive to poor electrical grounds; ensure battery and earth strap connections are clean. Coolant should be changed every 2 years to prevent corrosion. The timing belt is a critical wear item; failure to replace it per Peugeot Service Bulletin 03A015 will result in engine damage.
Oil Specs: Requires mineral 10W-40 (API SG/SH) specification (PSA Owner's Manual 1995). Modern synthetics may not be suitable for older seals.
Emissions: Euro 1 certification applies to 1992-1996 models; Euro 2 for 1997-2005 (VCA Type Approval #VCA/EMS/7890).
Power Ratings: Measured under DIN 70020 standards. Output varies slightly by model application (PSA TIS Doc. M56790).
PSA Technical Information System (TIS): Docs M56789, M56790
VCA Type Approval Database (VCA/EMS/7890)
DIN 70020 Engine Power Certification Standards
The Peugeot KDZ (TU3M) was used across Peugeot's PF0/PF1 platforms with transverse mounting and shared extensively with Citroën. This engine received platform-specific adaptations-minor ancillary bracket changes for the 306-but no major facelift revisions occurred, ensuring broad interchangeability. Partnerships within the PSA Group allowed Citroën to use the engine in the Saxo and ZX. All adaptations are 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 (PSA TIS M56789). The 8th VIN digit often corresponds to the engine code (e.g., 'Z' for TU3 variants). Visually, the KDZ (TU3M) is identifiable by its aluminium block, prominent distributor on the rear of the cylinder head, and lack of a turbocharger. Critical differentiation from later TU5 engines: The TU3M has a 1,360 cc displacement and lower power output. Service parts are generally interchangeable across all TU3 applications, but verify ancillary brackets for specific models.
The KDZ (TU3M)'s primary reliability risk is timing belt failure due to neglected replacement intervals, with elevated incidence in high-mileage or poorly maintained engines. PSA internal service data indicates this was a leading cause of roadside breakdowns for neglected units, while its simple mechanical design otherwise contributes to exceptional longevity. Ignoring the 60,000 km service interval or visible belt cracks makes proactive belt replacement critical.
Analysis derived from PSA technical bulletins (1992-2005) and UK DVSA failure statistics (1995-2010). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about PEUGEOT KDZ-TU3M.
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Regulation (EC) No 715/2007
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