The 2.5-liter V6 Alfa Romeo AR32405 engine was produced in Arese from 2000 to 2005 and was installed only on advanced modifications of the 156 model popular in the European market. Another similar power unit was installed on the 166 sedan under its own index AR36201.
Busso V6 family: AR34102, AR32405, AR67301, AR16105.
Specifications
| Production years | 2000-2005 |
| Displacement, cc | 2492 |
| Fuel system | distributed injection |
| Power output, hp | 192 |
| Torque output, Nm | 218 |
| Cylinder block | aluminum V6 |
| Block head | aluminum 24v |
| Cylinder bore, mm | 88 |
| Piston stroke, mm | 68.3 |
| Compression ratio | 10.3 |
| Features | no |
| Hydraulic lifters | yes |
| Timing drive | belt |
| Phase regulator | no |
| Turbocharging | no |
| Recommended engine oil | 10W-40 |
| Engine oil capacity, liter | 6.4 |
| Fuel type | petrol |
| Euro standards | EURO 3 |
| Fuel consumption, L/100 km (for Alfa Romeo 156 2002) — city — highway — combined |
17.0 8.8 11.8 |
| Engine lifespan, km | ~280 000 |
| Weight, kg | 190 |
The engine was installed on:
- Alfa Romeo 156 (Type 932) in 2000 – 2005.
Disadvantages of the Alfa Romeo AR32405 engine
- Most of the problems with this motor are due to suction through cracked pipes.
- This leads to floating engine speeds, as well as airing the system and overheating.
- Also often the engine overheats due to the failure of the thermostat or water pump.
- Saving on oil greatly affects the resource of hydraulic lifters and liners.
- The timing belt needs to be changed every 60,000 km, or if it breaks, the valves will bend.
Frequently asked questions about the Alfa Romeo AR32405
How much power does the Alfa Romeo AR32405 make?
The Alfa Romeo AR32405 develops 192 hp and 218 Nm of torque.
How much oil does the Alfa Romeo AR32405 take and which one?
Engine oil capacity: 6.4 liters. Recommended oil: 10W-40.
Does the Alfa Romeo AR32405 have a timing belt or chain?
The Alfa Romeo AR32405 uses a timing belt.
Is the Alfa Romeo AR32405 turbocharged?
No, the Alfa Romeo AR32405 is naturally aspirated.
Does the Alfa Romeo AR32405 need valve clearance adjustment?
No, the Alfa Romeo AR32405 has hydraulic lifters, so the valve clearances do not need to be adjusted.
How long does the Alfa Romeo AR32405 last?
The typical lifespan of the Alfa Romeo AR32405 is ~280 000 km with proper maintenance.
What is the fuel consumption of the Alfa Romeo AR32405?
Alfa Romeo 156 2002: city 17.0, highway 8.8, combined 11.8 L/100 km.
What cars was the Alfa Romeo AR32405 installed on?
Alfa Romeo 156 (Type 932) in 2000 - 2005.
What are the common problems of the Alfa Romeo AR32405?
Most of the problems with this motor are due to suction through cracked pipes. This leads to floating engine speeds, as well as airing the system and overheating. All known problems.
