The 2.5-liter V6 Alfa Romeo AR67301 engine was assembled at the Arese plant from 1992 to 1997 and was installed only on charged modifications of the very popular 155 model in the European market. The same power unit was installed on the 166 sedan, but under its own index AR66201.
Busso V6 family: AR34102, AR32405, AR67301, AR16105.
Specifications
| Production years | 1992-1997 |
| Displacement, cc | 2492 |
| Fuel system | distributed injection |
| Power output, hp | 165 |
| Torque output, Nm | 216 |
| Cylinder block | aluminum V6 |
| Block head | aluminum 12v |
| Cylinder bore, mm | 88 |
| Piston stroke, mm | 68.3 |
| Compression ratio | 10.0 |
| Features | no |
| Hydraulic lifters | yes |
| Timing drive | belt |
| Phase regulator | no |
| Turbocharging | no |
| Recommended engine oil | 10W-40 |
| Engine oil capacity, liter | 6.0 |
| Fuel type | petrol |
| Euro standards | EURO 2 |
| Fuel consumption, L/100 km (for Alfa Romeo 155 1995) — city — highway — combined |
14.0 7.3 9.3 |
| Engine lifespan, km | ~240 000 |
| Weight, kg | 180 |
The engine was installed on:
- Alfa Romeo 155 (Type 167) in 1992 – 1997.
Disadvantages of the Alfa Romeo AR67301 engine
- On the engines of the first years, the cams of the exhaust camshaft wore out rather quickly.
- Another weak point of this power unit is the valve guides.
- Also on specialized forums, the unreliable hydraulic timing belt tensioner is often scolded.
- A lot of trouble here is caused by constant leaks, and especially on cylinder head gaskets.
- The remaining problems are related to air leaks in the intake and engine overheating.
Frequently asked questions about the Alfa Romeo AR67301
How much power does the Alfa Romeo AR67301 make?
The Alfa Romeo AR67301 develops 165 hp and 216 Nm of torque.
How much oil does the Alfa Romeo AR67301 take and which one?
Engine oil capacity: 6.0 liters. Recommended oil: 10W-40.
Does the Alfa Romeo AR67301 have a timing belt or chain?
The Alfa Romeo AR67301 uses a timing belt.
Is the Alfa Romeo AR67301 turbocharged?
No, the Alfa Romeo AR67301 is naturally aspirated.
Does the Alfa Romeo AR67301 need valve clearance adjustment?
No, the Alfa Romeo AR67301 has hydraulic lifters, so the valve clearances do not need to be adjusted.
How long does the Alfa Romeo AR67301 last?
The typical lifespan of the Alfa Romeo AR67301 is ~240 000 km with proper maintenance.
What is the fuel consumption of the Alfa Romeo AR67301?
Alfa Romeo 155 1995: city 14.0, highway 7.3, combined 9.3 L/100 km.
What cars was the Alfa Romeo AR67301 installed on?
Alfa Romeo 155 (Type 167) in 1992 - 1997.
What are the common problems of the Alfa Romeo AR67301?
On the engines of the first years, the cams of the exhaust camshaft wore out rather quickly. Another weak point of this power unit is the valve guides. All known problems.
