The Alfa Romeo 552 83 099 – Diesel is a 1,956 cc, inline-four turbo-diesel engine produced between 2016 and 2020. It belongs to the Fiat Global Small Engine (GSE) family, specifically the 2.0L JTDM-3 generation, co-developed with FCA and PSA Group. Featuring Bosch CRS 3-20 common rail injection (up to 2,500 bar), variable geometry turbocharging (VGT), and DOHC 16-valve layout, it delivers 121 kW (165 PS) and peak torque of 380 Nm, designed for responsive mid-range performance and improved refinement.
Fitted to models including the Alfa Romeo Giulia (952) and Stelvio (956), the 552 83 099 – Diesel was engineered to meet Euro 6c emissions standards while maintaining sporty driving dynamics. Emissions compliance is achieved via dual-loop exhaust gas recirculation (EGR), a wall-flow diesel particulate filter (DPF), and integrated selective catalytic reduction (SCR) with AdBlue injection, ensuring NOx control without a separate downstream module.
One documented reliability concern is high-pressure fuel pump (HPFP) calibration sensitivity, noted in Alfa Romeo Technical Bulletin 59 005 14. The issue arises from software misalignment between the HPFP and ECU during cold starts, leading to transient fuel pressure fluctuations. From 2018, a revised ECU calibration (SW version 3.2.7) was implemented to stabilize pump control and reduce low-RPM hesitation.
Production years 2016–2020 meet Euro 6c standards (VCA UK Type Approval #VCA/EMS/552830).
The Alfa Romeo 552 83 099 – Diesel is a 1,956 cc inline-four turbo-diesel engineered for premium sedans and SUVs (2016–2020). It combines high-pressure common-rail injection with a variable-geometry turbocharger to deliver strong mid-range torque and refined operation. Designed to meet Euro 6c standards, it integrates emissions control within the exhaust manifold, balancing performance with environmental compliance.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,956 cc | |
| Fuel type | Diesel | |
| Configuration | Inline-4, DOHC, 16-valve | |
| Aspiration | Turbocharged | |
| Bore × stroke | 88.0 mm × 80.5 mm | |
| Power output | 121 kW (165 PS) @ 3,750 rpm | |
| Torque | 380 Nm @ 1,750–2,500 rpm | |
| Fuel system | Bosch CRS 3-20 common-rail (up to 2,500 bar) | |
| Emissions standard | Euro 6c | |
| Compression ratio | 15.5:1 | |
| Cooling system | Water-cooled | |
| Turbocharger | Single variable-geometry turbo (Garrett GT2260VK) | |
| Timing system | Chain-driven (integrated in cylinder head) | |
| Oil type | Fiat 9.55535-S3 M2 (5W-40) | |
| Dry weight | 152 kg |
The integrated SCR system reduces packaging but requires consistent highway driving to maintain regeneration cycles and prevent AdBlue dosing errors. Fiat 9.55535-S3 M2 (5W-40) oil is essential for turbo bearing and chain longevity due to its high-shear stability. Fuel quality remains critical—EN 590 diesel with lubricity additives must be used to avoid HPFP wear. The Bosch CRS 3-20 system is sensitive to air ingress; fuel filter changes must follow OEM bleed procedures. From 2018, updated ECU calibration (SW 3.2.7) resolved cold-start hesitation in early builds.
Oil Specs: Requires Fiat 9.55535-S3 M2 (5W-40) specification (Alfa Romeo SIB 59 005 14). Supersedes ACEA C2 standards.
Emissions: Euro 6c certification applies to all models (2016–2020) (VCA Type Approval #VCA/EMS/552830).
Power Ratings: Measured under ISO 1585 standards. Full torque delivery requires EU5+ fuel quality (Fiat PT-2016).
Alfa Romeo Technical Information System (TIS): Docs 59 001 12, 59 005 14
VCA Type Approval Database (VCA/EMS/552830)
ISO International: ISO 1585 Road vehicles — Test method for the measurement of fuel consumption
The Alfa Romeo 552 83 099 – Diesel was used across Alfa Romeo's 952/956 platforms with longitudinal mounting and shared with Fiat and Lancia under FCA Group collaboration. This engine received platform-specific adaptations—reinforced engine mounts in the Stelvio and revised intake manifolds in the Giulia—and from 2018 received updated ECU calibration and HPFP firmware, creating interchange limits. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped vertically on the left-side cylinder block near the exhaust manifold (Alfa Romeo TIS 59 001 12). The 8th VIN digit indicates engine type ('K' for 2.0 JTDM-3). Pre-2018 models have black valve covers with silver Alfa Romeo script; post-2018 units retain black script. Critical differentiation from 1.6 JTDM-2: 552 83 099 – Diesel has a larger turbo (Garrett GT2260VK) and integrated SCR in the exhaust manifold. Service parts require production date verification—HPFP assemblies before 03/2018 are incompatible with later units due to ECU calibration changes (Alfa Romeo SIB 59 005 14).
The 552 83 099 – Diesel's primary reliability risk is high-pressure fuel pump calibration sensitivity, with elevated incidence in mixed urban/highway use. Internal Alfa Romeo quality reports from 2017 indicated a notable share of pre-2018 units required ECU updates before 100,000 km, while UK DVSA MOT records show SCR-related failures are common in fleet-driven examples. Frequent cold starts and low-quality fuel increase pump and injector stress, making fuel quality and software adherence critical.
Analysis derived from Alfa Romeo technical bulletins (2016–2020) and UK DVSA failure statistics (2018–2022). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about ALFA-ROMEO 55283099.
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