The Peugeot XUD9TE Y4 is a 1,905 cc, inline‑four turbo‑diesel engine produced between 1995 and 2001. It features indirect injection (swirl chamber), a KKK K14 turbocharger, and a mechanical Bosch VE distributor injection pump. In standard form it delivered 66 kW (90 PS) and 196 Nm of torque, offering robust low-end pull and proven mechanical simplicity.
Fitted to models such as the 405, 406, and Partner van—including the 405 SRDT, 406 GLX TD, and Partner 1.9 D Turbo—the XUD9TE Y4 was engineered for durability and ease of maintenance in both passenger and light-commercial roles. Emissions compliance was achieved through exhaust gas recirculation (EGR) and oxidation catalyst, meeting Euro 2 standards across all production years.
One documented concern is premature wear of the Bosch VE pump’s internal cam ring and plunger assembly, highlighted in Peugeot Technical Service Bulletin TSB 09 01 98. This issue is often accelerated by poor fuel filtration or use of non-compliant diesel. From 1998 onward, updated pump seals and filtration standards were introduced to improve reliability.
All production years 1995–2001 meet Euro 2 standards (VCA UK Type Approval #VCA/EMS/5678).
The Peugeot XUD9TE Y4 is a 1,905 cc inline‑four turbo‑diesel engineered for compact sedans and light commercial vehicles (1995–2001). It combines indirect injection with a KKK K14 turbocharger to deliver rugged low‑rpm torque and mechanical reliability. Designed to meet Euro 2 emissions standards, it prioritizes serviceability and fuel tolerance over refinement.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,905 cc | |
| Fuel type | Diesel | |
| Configuration | Inline‑4, SOHC, 8‑valve | |
| Aspiration | Turbocharged | |
| Bore × stroke | 83.0 mm × 88.0 mm | |
| Power output | 66 kW (90 PS) @ 4,600 rpm | |
| Torque | 196 Nm @ 2,250 rpm | |
| Fuel system | Bosch VE mechanical distributor pump with indirect injection | |
| Emissions standard | Euro 2 | |
| Compression ratio | 21.5:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | KKK K14 (non‑VGT, wastegate‑controlled) | |
| Timing system | Belt‑driven (SOHC) | |
| Oil type | ACEA B3/B4 (SAE 10W‑40) | |
| Dry weight | 165 kg |
The indirect injection design provides mechanical robustness and tolerance to lower-quality diesel but delivers less refinement than modern common-rail engines. Strict adherence to 10,000 km oil and 20,000 km fuel filter intervals is essential to protect the Bosch VE pump from premature wear. Use of EN 590-compliant diesel with low sulfur content is required to prevent pump seizure and injector coking. The K14 turbo requires periodic inspection of the wastegate actuator rod for free movement. Belt-driven timing demands replacement every 80,000–100,000 km to prevent catastrophic interference failure. Pre-1998 pumps should be upgraded per TSB 09 01 98 if signs of fuel leakage appear.
Oil Specs: Requires ACEA B3/B4 (10W-40) specification (Peugeot TSB 09 01 98). Not compatible with Longlife or low-SAPS oils.
Emissions: Euro 2 certification applies to all 1995–2001 models (VCA Type Approval #VCA/EMS/5678). No Euro 3 variants exist.
Power Ratings: Measured under ISO 1585 standards. Output consistent across all markets (Peugeot TIS Doc. XUD-TIS-95).
Peugeot Technical Information System (TIS): Docs XUD-TIS-95, XUD-ETK-01
Peugeot Technical Service Bulletin TSB 09 01 98
VCA Type Approval Database (VCA/EMS/5678)
ISO 1585:1995 Road vehicles — Engine test code
The Peugeot XUD9TE Y4 was used across Peugeot's 405/406 platforms with longitudinal mounting and also supplied to Citroën for shared PSA applications. This engine received platform-specific adaptations—reinforced engine mounts in the 406 estate and modified exhaust routing in the Partner van—and from 1998 the updated Bosch VE pump seals improved fuel system durability, creating minor service part distinctions. Partnerships allowed Citroën's Xantia and ZX to use near-identical variants. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the left-side block near the injection pump mounting flange (Peugeot TIS XUD-TIS-95). The 7th VIN digit for Peugeot 406 is '9' for XUD9 variants. Pre-1998 engines use early Bosch VE pumps with single O-ring seals; post-1998 units feature double-seal pumps per TSB 09 01 98. Visual cue: KKK K14 turbo with external wastegate rod. Critical differentiation from non-turbo XUD9A: presence of turbo, intercooler (on some models), and EGR valve. Service parts for fuel system require production date verification—pump internals differ before/after 01/1998 (Peugeot TSB 09 01 98).
The XUD9TE Y4's primary reliability risk is Bosch VE injection pump failure, with elevated incidence in vehicles using poor-quality diesel or infrequent filter changes. Peugeot internal field reports from 1999 noted pump repairs in nearly 15% of pre-1998 units before 150,000 km, while UK DVSA data links timing belt neglect to interference damage in high-mileage examples. Extended oil intervals and low-sulfur fuel non-compliance accelerate pump and turbo wear, making maintenance discipline critical.
Analysis derived from Peugeot technical bulletins (1995–2002) and UK DVSA failure statistics (2000–2010). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about PEUGEOT XUD9TE-Y4.
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