AR32103 engine — Alfa Romeo 1.6 (1.6L)
1.6L · 120 hp
Engine overview
Vehicles with this engine
Factory specifications
Values from the manufacturer documentation for this engine.
Engine (general)
| Engine code | AR 32103 |
| Capacity | 1598 cc |
| Idle speed | 820 - 880 rpm |
| Normal | 11 - 14 bar |
| Oil pressure | 1.0 - 1.5 bar/rpm |
| Oil pressure | 3.5-4.5 / 4000 bar/rpm |
Engine (petrol)
| Fuel system (make and type) | Bosch ME7.3.1 |
| Number of cylinders | 4 |
| Firing order | 1-3-4-2 |
| Ignition coil resistance, primary | 0.264 - 0.336 ohms |
| Ignition coil resistance, secondary | 7000 ± 840 ohms |
| Spark plugs (make and type) | NGK PFR6B NGK BKR6EKPA |
| Spark plugs (make and type) | NGK PMR7A |
| Injection pressure/system pressure | 3.5 ± 0.2 bar |
| CO exhaust gas | < 0.2 % |
| CO at fast-idle speed | < 0.3 % |
| Fast-idle speed | 2400 - 2600 rpm |
| CO2 | > 14.0 % |
| HC | < 50 ppm |
| O2 | 0.1 - 0.5 % |
| Lambda | 0.97 - 1.03 |
| Lambda change (Delta Lambda) | 0.03 |
| Oil temperature during test | 60 °C |
| Closed-loop test at: | 700 - 1000 rpm |
Cooling system
| Cap pressure | 1.08 ± 0.1 bar |
| Thermostat opens at | 81 - 85 °C |
| Stage 1/Fan 1 | 92 °C |
| Stage 2/Fan 2 | 97 °C |
Electrical
| Battery | 50 / 60 Ah |
| Alternator | 85 / 100 A |
Capacities
| Engine sump, incl. filter | 4.4 l |
| Gearbox refill | 2.0 l |
| Cooling system | 6.9 l |
| Air-conditioner refrigerant | 650 g |
| Air-conditioner compressor oil | 145 ml |
Torque settings
| Cylinder head bolts — Stage 1 | 20 Nm |
| Cylinder head bolts — Stage 2 | 40 Nm |
| Cylinder head bolts — Stage 3 | 90 ° |
| Cylinder head bolts — Stage 4 | 90 ° |
| Cylinder head bolts — Stage 5 | 90 ° |
| Spark plugs | M14 25 - 36 Nm |
| Spark plugs | M10 11 - 16 Nm |
| Front hub | M24: |
| Rear hub | M24: 304 - 336 Nm |
| Wheel bolts | 88 - 108 Nm |
| Wheel bolts | 78-94 Nm |
Emissions
| Emission code | 70/220*1996/44 |
| Emission standard | Euro 2 (05/1997 ->) |
| CO | 1.171 g/km |
| HC NOx | 0.306 g/km |
| Emission code | 70/220*1996/69 |
| Emission standard | Euro 2 (09/1997 ->) |
| Emission code | 70/220*1999/102A |
| Emission standard | Euro 3 (07/2000 ->) |
| CO2 average | 195 g/km |
| CO | 0.428 g/km |
| HC | 0.091 g/km |
| NOx | 0.048 g/km |
| HC NOx | 0.139 g/km |
| Emission code | 70/220*2001/1B |
| Emission standard | Euro 4 (05/2003 ->) |
| Emission standard | Euro 2 (01/2000 ->) |
| CO2 average | 198 g/km |
| CO | 1.097 g/km |
| HC NOx | 0.329 g/km |
| CO | 0.302 - 0.428 g/km |
| HC | 0.078 - 0.091 g/km |
| NOx | 0.023 - 0.048 g/km |
| Emission code | 70/220*2003/76B |
| Emission standard | Euro 4 (07/2004 ->) |
Workshop procedures for this engine
Step-by-step procedures from the workshop database.
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TorqFix was built by a mechanic — after a 2,700 km drive with five roadside repairs that no diagnostic tool could explain.
The figures on this page come from manufacturer workshop documentation and are shown as they are. The page is assembled automatically from that data — it is not written by an AI. The AI works in the chat, where it answers for your specific car. It writes nothing here.
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The story behind TorqFix →Workshop data on this page last updated 22 Aug 2026.