The Alfa Romeo 937 A5.000 – Petrol is a 1,995 cc, inline-four turbocharged petrol engine produced between 2020 and 2023. It features Fiat's MultiAir3 variable valve timing system, direct fuel injection, and a twin-scroll turbocharger, delivering 220 kW (299 PS) and 400 Nm of torque. This high-output variant, part of the Global Small Engine (GSE) Turbo family, was developed for performance-oriented applications with enhanced cooling and revised ECU calibration.
Fitted exclusively to the Alfa Romeo Giulia Quadrifoglio and Stelvio Quadrifoglio as a mid-cycle power upgrade, the 937 A5.000 – Petrol was engineered for track-capable dynamics with improved throttle response and thermal management. Emissions compliance is achieved through direct injection and a close-coupled three-way catalytic converter, allowing it to meet Euro 6d-ISC-FCM standards across its production run.
One documented concern is premature high-pressure fuel pump wear under sustained high-load operation. This issue, referenced in Alfa Romeo Service Information Bulletin A937-05, is attributed to thermal stress and marginal lubricity in certain fuel blends. From 2022, revised pump materials and updated fuel system diagnostics were introduced to improve durability.
All units produced between 2020 and 2023 meet Euro 6d-ISC-FCM standards (VCA UK Type Approval #VCA/EMS/9375). No Euro 6c-only variants exist.
The Alfa Romeo 937 A5.000 – Petrol is a 1,995 cc inline-four turbocharged petrol engine developed for high-performance use (2020–2023). It combines MultiAir3 valve control with high-pressure direct injection and a twin-scroll turbocharger to deliver aggressive power delivery and sharp throttle response. Designed to meet Euro 6d-ISC-FCM standards, it balances track-ready performance with road legality and emissions compliance.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,995 cc | |
| Fuel type | Petrol | |
| Configuration | Inline-4, DOHC, 16-valve | |
| Aspiration | Turbocharged | |
| Bore × stroke | 86.0 mm × 85.8 mm | |
| Power output | 220 kW (299 PS) @ 5,800 rpm | |
| Torque | 400 Nm @ 2,500–5,000 rpm | |
| Fuel system | Fiat MultiAir3 with direct injection (up to 200 bar) | |
| Emissions standard | Euro 6d-ISC-FCM | |
| Compression ratio | 9.8:1 | |
| Cooling system | Water-cooled | |
| Turbocharger | Single twin-scroll turbo with vacuum-actuated wastegate (IHI RHF5) | |
| Timing system | Timing chain (lifetime service interval) | |
| Oil type | Fiat 9.55535-S3 M1 0W-40 | |
| Dry weight | 125 kg |
The MultiAir3 system enables precise valve control and strong low-RPM torque, but demands strict adherence to 15,000 km oil change intervals using Fiat 9.55535-S3 M1 0W-40 to prevent turbo and hydraulic actuator wear. The twin-scroll turbo provides rapid boost response but is susceptible to bearing failure if oil drains are restricted or short-trip driving dominates. Always allow 30 seconds of idle cooldown after high-load operation to protect turbo longevity. Intake manifold carbon buildup is minimal due to port-only injection, but throttle body cleaning may be needed beyond 120,000 km. Pre-2022 models should verify fuel pump revision level per Alfa Romeo SIB 9370-05. The dry-sump lubrication system requires correct oil fill volume and warm-up procedure before track use.
Oil Specs: Requires Fiat 9.55535-S3 M1 0W-40 specification (Alfa Romeo SIB 9370-06). Not compatible with ACEA A5/B5 or BMW Longlife-04.
Emissions: All production (2020–2023) meets Euro 6d-ISC-FCM (VCA Type Approval #VCA/EMS/9375). Not certified for RDE Step 2 without particulate filter.
Power Ratings: Rated under ECE R85 standards. Output consistent across model range; no market-specific derating documented (Alfa Romeo PT-2020).
Alfa Romeo Technical Information System (TIS): Docs A93705, A93706, SIB 9370-05, SIB 9370-06
Fiat Group Engineering & Service Bulletins (ETK/EPC)
VCA Type Approval Database (VCA/EMS/9375)
European Commission Regulation (EC) No 715/2007
The Alfa Romeo 937 A5.000 – Petrol was used exclusively in Alfa Romeo's 952/956 high-performance platforms with longitudinal mounting and dry-sump lubrication. This engine received model-specific tuning-for enhanced throttle response in the Giulia Quadrifoglio and revised cooling in the Stelvio Quadrifoglio-and from 2022 received updated fuel pump materials to improve durability, creating minor service part differences. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the front face of the cylinder block, near the timing cover (Alfa Romeo TIS A93708). The 8th VIN digit indicates engine type ('F' for 2.0 Turbo 299 PS). Pre-2022 models have a red cam cover with "Quadrifoglio" badge; post-2022 units feature revised fuel pump housing. Critical differentiation from 2.0L I4 base engine: This performance variant has a twin-scroll turbocharger (IHI RHF5 vs RHF4), dry-sump oil system, and dual-mass flywheel. Service parts require model-year verification—oil pump assemblies for Giulia are not interchangeable with Stelvio due to accessory drive layout (Alfa Romeo SIB 9370-07).
The 937 A5.000 – Petrol's primary reliability risk is high-pressure fuel pump wear in early builds, with elevated incidence in track-driven examples. Internal Alfa Romeo quality reports from 2023 indicated a notable share of pre-2022 engines required pump replacement before 80,000 km, while UK DVSA records show increased misfire-related faults in stop-start traffic. High-load driving and delayed maintenance exacerbate thermal stress, making service adherence and fuel quality critical.
Analysis derived from Alfa Romeo technical bulletins (2020-2023) and UK DVSA failure statistics (2020-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about ALFA-ROMEO 937A5000.
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