The Peugeot 851X (ZDJL) is a 1,598 cc, inline‑four turbocharged petrol engine produced between 2010 and 2016. It features direct fuel injection, dual overhead camshafts (DOHC), and a single twin‑scroll turbocharger. In standard form it delivers 121 kW (165 PS) and 240 Nm of torque, with strong mid‑range response for agile urban and motorway driving.
Fitted to models such as the Peugeot 308 II (T9), 3008 II, and 508 RXH, the ZDJL was engineered for drivers seeking a balance of performance, refinement, and moderate fuel economy. Emissions compliance was achieved through a close‑coupled three‑way catalytic converter and precise lambda control, meeting Euro 5 standards across all production years.
One documented concern is high‑pressure fuel pump (HPFP) wear, which can lead to hard starts or misfires. This issue is referenced in PSA Service Bulletin 13BZ05 and is often linked to prolonged use of low‑quality fuel or extended service intervals. From 2014 onward, PSA introduced revised pump internals and updated cam follower geometry to improve durability.
All production years (2010–2016) meet Euro 5 emissions standards (VCA UK Type Approval #VCA/EMS/851X).
The Peugeot 851X (ZDJL) is a 1,598 cc inline‑four turbocharged petrol engine engineered for compact and mid‑size models (2010–2016). It combines gasoline direct injection with a twin‑scroll turbocharger to deliver responsive mid‑range torque and smooth power delivery. Designed to meet Euro 5 standards, it balances performance with urban drivability and compliance.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,598 cc | |
| Fuel type | Petrol (Unleaded) | |
| Configuration | Inline‑4, DOHC, 16‑valve | |
| Aspiration | Turbocharged (twin‑scroll) | |
| Bore × stroke | 77.0 mm × 85.8 mm | |
| Power output | 121 kW (165 PS) @ 6,000 rpm | |
| Torque | 240 Nm @ 1,400–4,000 rpm | |
| Fuel system | Bosch HDP5 high‑pressure direct injection (up to 200 bar) | |
| Emissions standard | Euro 5 | |
| Compression ratio | 10.0:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | Single twin‑scroll (Honeywell GT1549V) | |
| Timing system | Chain (front‑mounted; low‑wear design) | |
| Oil type | PSA B71 2312 (SAE 5W‑30) | |
| Dry weight | 128 kg |
The twin‑scroll turbo provides responsive mid‑range torque ideal for overtaking and motorway merging but requires consistent use of high‑quality EN 228 petrol to prevent HPFP wear. PSA B71 2312 (5W‑30) oil is critical for cam follower lubrication and HPFP longevity. Extended oil change intervals (>15,000 km) or low‑sulphur fuel variants increase HPFP failure risk. Post‑2014 engines feature revised cam followers per PSA SIB 13BZ05. Carbon buildup on intake valves is minimal due to direct injection but may occur in high‑mileage units under frequent short‑trip use.
Oil Specs: Requires PSA B71 2312 (5W‑30) specification (PSA SIB 13BZ05). Equivalent to ACEA C2/C3 with PSA-specific additive balance.
Emissions: Euro 5 certification applies to all 2010–2016 ZDJL engines (VCA Type Approval #VCA/EMS/851X). No Euro 6 variants exist.
Power Ratings: Measured under ISO 1585 standards. Power output assumes RON 95 fuel (PSA TIS Doc. A44230).
PSA Technical Information System (TIS): Docs A44210, A44215, A44220, SIB 13BZ05
VCA Type Approval Database (VCA/EMS/851X)
ISO 1585: Road vehicles — Engine test code
The Peugeot 851X (ZDJL) was used across Peugeot's T9 and R8 platforms with transverse mounting and no external licensing. This engine received platform-specific adaptations—reinforced mounts in the 3008 II and revised cooling ducting in the 508 RXH—and from 2014 the facelifted 308 II adopted minor HPFP revisions, creating interchange limits. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the front timing cover near the crank pulley (PSA TIS A44200). The 7th VIN digit indicates engine family ('Z' for ZDJL series). Pre-2014 models use Bosch HDP5 pumps with flat cam followers; post-2014 units have updated followers with chamfered edges. Critical differentiation from EP6FDT: ZDJL uses direct injection only (no port injectors) and has a twin‑scroll turbo housing. Service parts for HPFP require production date verification—units before 06/2014 are incompatible with later cam followers (PSA SIB 13BZ05).
The ZDJL's primary reliability risk is high-pressure fuel pump (HPFP) wear on early builds, with elevated incidence in vehicles using low-quality fuel or extended service intervals. PSA internal data from 2014 indicated a notable share of pre-2014 engines requiring HPFP replacement before 100,000 km, while UK DVSA records show no significant emissions-related MOT failures linked to this engine. Fuel quality and oil change discipline make HPFP longevity critical.
Analysis derived from PSA technical bulletins (2013–2016) and UK DVSA failure statistics (2015–2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about PEUGEOT 851X-ZDJL.
Comprehensive technical documentation and regulatory references
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Regulation (EC) No 715/2007
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