The Jeep 552 80 444 is a 2,987 cc, 60 — degree V6 turbo — diesel engine produced between 2014 and 2018. It features a DOHC 24 — valve layout, common rail direct injection, and a variable geometry turbocharger (VGT), delivering 184 kW (250 PS) and 600 Nm of torque for enhanced towing and highway performance. The twin — turbo configuration provides strong, linear power delivery ideal for heavy loads and high — speed cruising.
Fitted primarily to the WK2 Grand Cherokee SRT and certa…
All production years (2014–2018) meet Euro 6 standards .
The Jeep 552 80 444 is a 2,987 cc V6 turbo-diesel engineered for high-performance SUV applications (2014–2018). It combines twin-turbocharging with common-rail direct injection to deliver exceptional torque and smooth power. Designed to meet stringent Euro 6 emissions standards, it prioritizes performance without compromising environmental compliance.
| Parameter | Value | Source |
|---|---|---|
Displacement | 2,987 cc | |
Fuel type | Diesel | |
Configuration | 60° V6, DOHC, 24-valve | |
Aspiration | Twin-turbocharged | |
Bore × stroke | 89.0 mm × 80.0 mm | |
Power output | 184 kW (250 PS) | |
Torque | 600 Nm @ 1,600–2,600 rpm | |
Fuel system | Bosch CP4.2 common-rail (up to 2,000 bar) | |
Emissions standard | Euro 6 | |
Compression ratio | 16.0:1 | |
Cooling system | Water-cooled | |
Turbocharger | Twin variable-geometry turbos (Honeywell) | |
Timing system | Chain-driven (front-mounted) | |
Oil type | Refer to vehicle handbook / manufacturer specification | |
Dry weight | 252 kg |
The Jeep 552 80 444 – Diesel (Fiat Powertrain) was developed for Jeep's high-performance WK2 platform with longitudinal mounting and is not licensed for other manufacturers. This engine received specific adaptations-a reinforced crankshaft and upgraded cooling system for the Grand Cherokee SRT-and from 2017 the EGR cooler was revised, creating minor interchange limits. All adaptations are documented in OEM technical bulletins.
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Field reports and technical service bulletins highlight component wear patterns under high-load operation. Adherence to manufacturer service intervals and approved fluid specifications is critical for long-term reliability.
Analysis derived from manufacturer technical service bulletins and industry workshop records. Repair procedures should follow manufacturer guidelines.
The most common questions about engine codes, what they mean, how to find them and how this database works
The 552 80 444 offers exceptional performance but has known vulnerabilities, primarily the EGR cooler in early models. Vehicles with a full service history using Fiat-spec fluids and fuels can be very durable. The revised cooler (post-2017) significantly improves long-term prospects, making later models more desirable.
The most frequent issues are failure of the low-pressure EGR cooler, turbocharger actuator faults, AdBlue system malfunctions, and wear on the high-pressure fuel pump. These are well-documented in Fiat Powertrain service bulletins and are often linked to maintenance practices or component design in early production.
This high-output diesel engine was used exclusively in the Jeep Grand Cherokee (WK2) from 2014 to 2018, primarily in the SRT trim and certain Overland variants in international markets. It was marketed as the top-tier '3.0L V6 Turbo Diesel' option.
Aftermarket ECU tuning is common on the 552-80-444 platform, but increasing boost or altering engine parameters accelerates component wear, impacts emissions compliance, and may void vehicle warranties. Any modifications should be evaluated carefully by a qualified specialist.
Fuel economy is reasonable for a high-performance V6 diesel SUV. Expect combined figures of approximately 9.0–10.0 L/100km (28–31 mpg UK) for the Grand Cherokee SRT. Real-world consumption will vary significantly based on driving style, with spirited driving yielding higher figures.
Yes. This is an interference engine. If the timing chain were to fail or jump, the pistons would collide with the open valves, causing catastrophic internal engine damage. The timing chain is designed to be durable, but proper oil maintenance is essential.
Fiat Powertrain mandates the use of Fiat 9.55535-S2 specification oil, typically a 5W-30 synthetic. This specific low-SAPS formulation is critical for protecting the emissions systems (DPF, SCR) and turbochargers. Using non-approved oil can lead to system blockages and is not covered under warranty.
Comprehensive technical documentation and regulatory references
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Regulatory Stability
EU regulations are referenced using CELEX identifiers for long-term stability.
EUR-Lex
EU emissions and type-approval regulations (e.g., CELEX:32007R0715, CELEX:32017R1151).
GOV.UK: Vehicle Approval & V5C
UK vehicle approval processes, import rules, and MoT guidance.
DVLA: Engine Changes & MoT
Official guidance on engine swaps and inspection implications.
Vehicle Certification Agency (VCA)
UK type-approval authority for automotive products.
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
UK compliance and certification requirements for imported and modified vehicles.
VCA Certification Portal
Type-approval guidance and documentation.
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