Alfa Romeo Engine Codes Database

Complete Alfa Romeo Engines Database (1910–2026)

engine-0engine-1engine-2

Covers Alfa Romeo petrol, diesel, and hybrid engines used across UK and European models - from early Twin Spark to modern MultiAir and JTDM II units. Each engine code includes specifications, compatible vehicles, and emissions data, sourced from official Stellantis and EU records.

Engine Variants
Models Covered
of Engineering
Compliance Data

Data sourced from Stellantis Technical Documentation, EU Regulation (EC) No 715/2007, and Alfa Romeo Technical Service Information (TIS) documents.

Browse Alfa Romeo engine records

Find Alfa Romeo engine codes by family, model, or generation

Engine reference image
Engine CodeFuel TypeSeries
182B9000
Petrol182b9000
192A1000
Petrol192a1000
192A5000
Petrol192a5000
192B1000
Petrol192b1000
198A1000
Petrol198a1000
198A2000
Petrol198a2000
198A4000
Petrol198a4000
199A3000
Petrol199a3000
199A6000
Petrol199a6000
199A8000
Petrol199a8000
199B1000
Petrol199b1000
199B4000
Petrol199b4000
199B6000
Petrol199b6000
199B8000
Petrol199b8000
312A2000
Petrol312a2000
330A1000
Petrol330a1000
350A1000
Petrol350a1000
46335975
Diesel46335975
55266388
Diesel55266388
55268532
Diesel55268532
55268818
Diesel55268818
55271040
Diesel55271040
55271838
Diesel55271838
55273835
Diesel55273835
55275156
Diesel55275156
55280444
Diesel55280444
55283099
Diesel55283099
55284529
Diesel55284529
55284636
Diesel55284636
670050436
Petrol670050436
670052695
Petrol670052695
670052721
Petrol670052721
670052784
Petrol670052784
839A6000
Petrol839a6000
841C000
Petrol841c000
841G00
Petrol841g00
841H000
Petrol841h000
841M000
Petrol841m000
841N000
Petrol841n000
844A2000
Petrol844a2000
932A000
Petrol932a000
932A2000
Petrol932a2000
936A000
Petrol936a000
936A6000
Petrol936a6000
936B000
Petrol936b000
937A1000
Petrol937a1000
937A2000P
Petrol937a2000p
937A3000
Petrol937a3000
937A4000
Petrol937a4000
937A5000
Petrol937a5000
937A6000
Petrol937a6000
937A7000
Petrol937a7000
937A8000
Petrol937a8000
939A000
Petrol939a000
939A1000
Petrol939a1000
939A2000
Petrol939a2000
939A3000
Petrol939a3000
939A4000
Petrol939a4000
939A5000
Petrol939a5000
939A6000
Petrol939a6000
939A7000
Petrol939a7000
939A8000
Petrol939a8000
939A9000
Petrol939a9000
939B1000
Petrol939b1000
939B3000
Petrol939b3000
940A1000
Petrol940a1000
940A2000
Petrol940a2000
940A3000
Petrol940a3000
940A4000
Petrol940a4000
940A5000
Petrol940a5000
940A6000
Petrol940a6000
940A7000
Petrol940a7000
940A8000
Petrol940a8000
940B1000
Petrol940b1000
940B2000
Petrol940b2000
940B4000
Petrol940b4000
940B500
Petrol940b500
940B6000
Petrol940b6000
940B7000
Petrol940b7000
940B8000
Petrol940b8000
940B9000
Petrol940b9000
940C1000
Petrol940c1000
940C2000
Petrol940c2000
940C3000
Petrol940c3000
940C4000
Petrol940c4000
940C5000
Petrol940c5000
955A1000
Petrol955a1000
955A2000
Petrol955a2000
955A3000
Petrol955a3000
955A4000
Petrol955a4000
955A6000
Petrol955a6000
955A7000
Petrol955a7000
955A8000
Petrol955a8000
955A9000
Petrol955a9000
955B1000
Petrol955b1000
955B2000
Petrol955b2000
960A1000
Petrol960a1000
AR00112
PetrolAR-Series
AR00121
PetrolAR-Series
AR00506
PetrolAR-Series
AR00508
PetrolAR-Series
AR00512
PetrolAR-Series
AR00515
PetrolAR-Series
AR00516
PetrolAR-Series
AR00526
PetrolAR-Series
AR00526S
PetrolAR-Series
AR00530
PetrolAR-Series
AR00531
PetrolAR-Series
AR00536
PetrolAR-Series
AR00548
PetrolAR-Series
AR01544
PetrolAR-Series
AR01563
PetrolAR-Series
AR01588
PetrolAR-Series
AR01590
PetrolAR-Series
AR01600
PetrolAR-Series
AR01608
PetrolAR-Series
AR01608X
PetrolAR-Series
AR01623
PetrolAR-Series
AR01644
PetrolAR-Series
AR01646
PetrolAR-Series
AR01648
PetrolAR-Series
AR01655
PetrolAR-Series
AR01713
PetrolAR-Series
AR01911
PetrolAR-Series
AR06100
PetrolAR-Series
AR06124
PetrolAR-Series
AR06134
PetrolAR-Series
AR06158
PetrolAR-Series
AR06166
PetrolAR-Series
AR06168
PetrolAR-Series
AR06202
PetrolAR-Series
AR06212
PetrolAR-Series
AR06224
PetrolAR-Series
AR06410
PetrolAR-Series
AR06412
PetrolAR-Series
AR06416
PetrolAR-Series
AR06420
PetrolAR-Series
AR06430
PetrolAR-Series
AR10527
PetrolAR-Series
AR10538
PetrolAR-Series
AR11671
PetrolAR-Series
AR16101
PetrolAR-Series
AR16102
PetrolAR-Series
AR16105
PetrolAR-Series
AR16201
PetrolAR-Series
AR16202
PetrolAR-Series
AR30102
PetrolAR-Series
AR30124
PetrolAR-Series
AR30128
PetrolAR-Series
AR30143
PetrolAR-Series
AR30146
PetrolAR-Series
AR30160
PetrolAR-Series
AR30164
PetrolAR-Series
AR30168
PetrolAR-Series
AR30180
PetrolAR-Series
AR30184
PetrolAR-Series
AR30500
PetrolAR-Series
AR30502
PetrolAR-Series
AR30504
PetrolAR-Series
AR30508
PetrolAR-Series
AR30520
PetrolAR-Series
AR30550
PetrolAR-Series
AR30558
PetrolAR-Series
AR30585
PetrolAR-Series
AR30586
PetrolAR-Series
AR30587
PetrolAR-Series
AR30588
PetrolAR-Series
AR30736
PetrolAR-Series
AR30737
PetrolAR-Series
AR30737A
PetrolAR-Series
AR30747
PetrolAR-Series
AR30753
PetrolAR-Series
AR30755
PetrolAR-Series
AR31000
PetrolAR-Series
AR31010
PetrolAR-Series
AR32102
PetrolAR-Series
AR32104
PetrolAR-Series
AR32201
PetrolAR-Series
AR32205
PetrolAR-Series
AR32301
PetrolAR-Series
AR32302
PetrolAR-Series
AR32310
PetrolAR-Series
AR32401
PetrolAR-Series
AR32405
PetrolAR-Series
AR32501
PetrolAR-Series
AR33201
PetrolAR-Series
AR33401
PetrolAR-Series
AR33501
PetrolAR-Series
AR33503
PetrolAR-Series
AR33601
PetrolAR-Series
AR34102
PetrolAR-Series
AR34103
PetrolAR-Series
AR34201
PetrolAR-Series
AR34202
PetrolAR-Series
AR34301
PetrolAR-Series
AR34302
PetrolAR-Series
AR36101
PetrolAR-Series
AR36201
PetrolAR-Series
AR36301
PetrolAR-Series
AR37101
PetrolAR-Series
AR37203
PetrolAR-Series
AR38201
PetrolAR-Series
AR38401
PetrolAR-Series
AR38501
PetrolAR-Series
AR61102
PetrolAR-Series
AR61201
PetrolAR-Series
AR61503
PetrolAR-Series
AR64101
PetrolAR-Series
AR64102
PetrolAR-Series
AR64103
PetrolAR-Series
AR64301
PetrolAR-Series
AR64303
PetrolAR-Series
AR64304
PetrolAR-Series
AR64305
PetrolAR-Series
AR64306
PetrolAR-Series
AR64307
PetrolAR-Series
AR64308
PetrolAR-Series
AR64399
PetrolAR-Series
AR66201
PetrolAR-Series
AR66301
PetrolAR-Series
AR66302
PetrolAR-Series
AR66303
PetrolAR-Series
AR67101
PetrolAR-Series
AR67102
PetrolAR-Series
AR67105
PetrolAR-Series
AR67106
PetrolAR-Series
AR67199
PetrolAR-Series
AR67201
PetrolAR-Series
AR67202
PetrolAR-Series
AR67203
PetrolAR-Series
AR67204
PetrolAR-Series
AR67299
PetrolAR-Series
AR67301
PetrolAR-Series
AR67302
PetrolAR-Series
AR67303
PetrolAR-Series
AR67402
PetrolAR-Series
AR67501
PetrolAR-Series
AR67601
PetrolAR-Series
VM07B
DieselVM-Series
VM08B
DieselVM-Series
VM31B
DieselVM-Series
VM32B
DieselVM-Series
VM4HT2
DieselVM-Series
VM80A
DieselVM-Series
VM81A
DieselVM-Series
VM84A
DieselVM-Series

Alfa Romeo Engines Used by Third Parties

See where Alfa Romeo power drives other Stellantis brands.

EV & Hybrid Engines

Explore Alfa Romeo's electrified powertrain technologies.

Engine specifications and technical data sourced from Stellantis Technical Documentation and EU Vehicle Type Approval Database. Consult vehicle documentation or professional guidance before undertaking mechanical work. Report errors or omissions through our contact channels.

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How to Find Your Alfa Romeo Engine Code

The engine code is essential for ordering parts, diagnosing issues, and verifying compatibility. It is not the same as the VIN or chassis number. This guide shows exactly where to find it - by model and engine type - using official Stellantis and DVLA sources

Engine Code

Engine Code

A unique identifier stamped on the engine block or cover used for parts and service.

VIN

VIN

The vehicle identification number that holds encoded vehicle and engine information.

Chassis Number

Chassis Number

The chassis or frame number used for registration and legal identification.

Alfa Romeo 159 (2005–2011)

Alfa Romeo 159 (2005–2011)

1.9 JTDm (937A3.000)

Locate the engine code on the front of the cylinder block, just below the injection pump assembly on the driver's side (LHD) or passenger side (RHD). It is stamped into cast iron. A torch and wire brush may be required to remove road grime.

Alfa Romeo Giulietta (2010–2020)

Alfa Romeo Giulietta (2010–2020)

1.4 TB MultiAir (940A1.000)

The code is printed on a white plastic riveted label attached to the upper timing cover, visible once the plastic engine beauty cover is removed. Difficulty: Simple (no tools required). Look for '940A1.000' or '955A2.000'.

Alfa Romeo Giulia / Stelvio (2016–Present)

Alfa Romeo Giulia / Stelvio (2016–Present)

2.2 JTDM II (552S8.000)

Stamped vertically on the rear of the cylinder block, adjacent to the firewall. Access requires a long-reach mirror or flexible endoscope. Difficulty: Moderate. Code begins with '552S8.000' for latest emissions-compliant variants.

Alfa Romeo MiTo (2008–2018)

Alfa Romeo MiTo (2008–2018)

1.4 TB MultiAir (955A8.000)

The engine code is located on a label attached to the intake manifold, near the turbocharger. It reads '955A8.000' for turbo variants. Confirm prefix '955A' for MultiAir-equipped models.

Engine code locations per Alfa Romeo TIS Document A15001 – Vehicle Identification. V5C field definitions from DVLA Guide to Vehicle Registration. VIN structure compliant with EU Regulation (EC) No 715/2007, Article 7.

Alfa Romeo Engine Technology Specifications and Reliability Data

A technical breakdown of Alfa Romeo's core engine systems including Twin Spark ignition, JTD/JTDM common rail, MultiAir valve actuation, and turbo architectures with documented reliability impacts. All data sourced from Stellantis Technical Documentation, Alfa Romeo TIS and EU Regulation (EC) No 715/2007

Overview

Alfa Romeo's Twin Spark technology utilises two spark plugs per cylinder, paired with variable valve timing (VVT), to optimise combustion efficiency and flame front propagation. Developed to meet stringent late-1990s emissions targets while maintaining high-revving performance characteristics.

How it Works

The system employs one main plug centrally located and a secondary plug near the intake valve. The ECU staggers ignition timing between the two plugs based on load and RPM. Combined with a phaser-driven inlet cam, this allows precise control over the combustion cycle.

Twin Spark mechanism
Evolution
Gen 1

AR16201 (1995)

Mechanical VVT, dual plugs, 140 hp

Gen 2

AR32310 (2001)

Electronic VVT, composite manifolds

Gen 3

932B2.000 (2005)

Drive-by-wire integration, Euro 4 compliant

Sources
Alfa Romeo TIS Document SI B13 00 01
Alfa Romeo 156 Workshop Manual – Section 5.2 Ignition
Affected Engines
AR16201AR32310932B2.000937A1.000
COMMON ISSUES

  • VVT phaser wear

    causing cold-start rattling (60,000+ miles)

  • Coil pack degradation

    leading to intermittent misfires

  • Intake manifold runner flap actuator failure

    error P2004

Alfa Romeo Engine Production Facts Manufacturing Output and Partnerships

Authoritative data on Alfa Romeo's global engine production, plant operations, and strategic partnerships. All figures sourced from Stellantis Annual Reports, Sustainability Reports, and EU industrial compliance records.

Major Engine Production Plants

Alfa Romeo manufactures engines at three primary Stellantis facilities, each specialising in specific families.

Cassino Plant

🇮🇹Cassino Plant(Italy)

  • Primary assembly for high-performance and modern modular engines
  • Engines: 2.0 JTDM II, 1.750 TBi, 2.9 V6 Quadrifoglio
  • Capacity: ~180,000 units annually (2024 figures)
Pratola Serra Plant

🇮🇹Pratola Serra Plant(Italy)

  • High-volume diesel and small displacement petrol production
  • Engines: 1.3 MultiJet II, 1.4 TB MultiAir, legacy 1.9 JTDm blocks
  • Capacity: ~220,000 units annually (2024 figures)
Turin-Mirafiori

🇮🇹Turin-Mirafiori(Italy)

  • Historic facility, now transitioned to electrification and niche builds
  • Engines: PHEV e-Motors, BEV battery pack assembly
  • Capacity: ~50,000 e-drives annually (2025 figures)

Annual Engine Production Volume

Alfa Romeo produces approximately 105,000 engines annually across shared Stellantis platforms. Note the steady decline in Diesel production due to Euro 6d compliance costs, while Hybrid integration rises sharply.

Diesel Decline (-20% since 2020)
Hybrid Growth (+25% since 2020)
Regulatory Impact: (EC) No 715/2007

Note: Diesel production has declined steadily due to Euro 6d compliance costs, urban access restrictions, and accelerated PHEV rollout. Hybrid integration rising sharply post-2022.

0k40k80k120k160k200k145k2020132k2021128k2022115k2023105k2024 (e)Total Engines Produced
Petrol
Diesel
Hybrid

Alfa Romeo-Fiat/Stellantis Joint Development

Operating under Fiat Chrysler Automobiles and now Stellantis, Alfa Romeo engines are co-developed with sister brands to share R&D costs and meet EU fleet CO2 averages.

Shared Tech

1.4 TB MultiAir and 1.3 MultiJet II standardised across group

Production

Common tooling reduces per-unit manufacturing costs by ~18%

Alfa Romeo-Fiat/Stellantis Shared Powertrains
  • Shared extensively with Fiat Professional (Ducato/Movano) and Lancia (Delta/Thema)
  • Historical licensing to Saab Automobile AB (pre-2012) for 1.9 JTDm applications
  • Common ECU architecture enables unified diagnostic protocols across Stellantis brands

Stellantis Powertrain Synergy Report, 2023

Powertrain Mix: Petrol vs Diesel vs Hybrid (2020–2024)

Shift in production reflects EU emissions policy and consumer demand across the UK and European markets.

Petrol50%
Diesel15%
Hybrid35%
Petrol
50–60%
Driven by 1.5 TB mild-hybrid and 2.0 JTDM replacement
Diesel
15–35%
Declining due to Euro 6d costs, urban bans, AdBlue complexity
Hybrid (PHEV)
20–35%
Tonale PHEV and mild-hybrid Giulia variants

This aligns with Commission Regulation (EU) 2017/1151 (WLTP/RDE) and EU 2035 ICE phase-out roadmap.

Engine production years verified via Stellantis Group Annual & Sustainability Reports (2020–2024). Partnership details from Stellantis Powertrain Synergy Report. Emissions regulations per EU Regulation (EC) No 715/2007 and Commission Regulation (EU) 2017/1151.

Engine Code FAQ Common Questions Answered

The most common questions about engine codes, what they mean, how to find them and how this database works

Confirm the full engine designation using vehicle-specific manufacturer records and the engine marking. An engine serial number, a registration record and a marketed power badge are not automatically the same identifier. Match the VIN/build data and the installed engine before selecting parts or a replacement.

No. A factory-application reference and a replacement-interchange decision are different. Match the full engine designation, vehicle build data, emissions equipment, controls and relevant supplier/OEM information.

No. Records have different review states. Read the correction notice, source scope and application limits on the individual record. Missing technical fields must not be inferred from similar engine codes.

References, Disclaimers and Sources

EngineCode.uk provides reference information about Alfa Romeo engines. It is operated by Engine Finders UK Ltd and also offers an optional replacement-engine enquiry service. Technical information can contain errors or omissions. Check the sources and verification notes for the relevant record, and confirm the details for your vehicle before buying parts or arranging work.

EngineCode.uk is a reference website operated by Engine Finders UK Ltd. It is not an official manufacturer website and is not endorsed by the manufacturers whose engines it describes. Manufacturer names and trademarks are used to identify the subjects covered. Our ownership and any commercial routes are explained in our Ownership and Commercial Disclosure.

  • Stellantis – Product Technical Reports (PTR-2024), Annual Reports, Sustainability Reports
  • Alfa Romeo TIS / ISTA – Service Information, Repair Manuals, SI Bulletins (e.g., SI B11 03 08)
  • EU Regulation (EC) No 715/2007 – Type-approval of light-duty vehicles
  • Commission Regulation (EU) 2017/1151 – WLTP and RDE testing procedures
  • UK DVLA Vehicle Approval and V5C Guidelines
DVLA: Engine Changes and MoT Compliance

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