From 1999 to 2003, the Alfa Romeo AR16105 3.0-liter V6 engine was assembled at the Arese plant and fitted in both the Spider convertible and the well-known GTV sports coupe. The Lancia Thesis as 841A000 or the model 166 with the index AR36101 had the same unit installed.

The Busso V6 series includes: AR34102, AR32405, AR67301, AR16105.
Specifications
| Production years | 1999-2003 |
| Displacement, cc | 2959 |
| Fuel system | distributed injection |
| Power output, hp | 218 |
| Torque output, Nm | 270 |
| Cylinder block | aluminum V6 |
| Block head | aluminum 24v |
| Cylinder bore, mm | 93 |
| Piston stroke, mm | 72.6 |
| 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 | 5.9 |
| Fuel type | petrol |
| Euro standards | EURO 3 |
| Fuel consumption, L/100 km (for Alfa Romeo GTV 2001) — city — highway — combined |
16.8 8.7 11.7 |
| Engine lifespan, km | ~300 000 |
| Weight, kg | 195 |
The engine was installed on:
- Alfa Romeo GTV II (Type 916) in 2000 – 2003;
- Alfa Romeo Spider V (Type 916) in 1999 – 2003.
Disadvantages of the Alfa Romeo AR16105 engine
This motor’s primary issues are related to suction via fractured pipes.
This causes overheating and system airing in addition to floating engine speed.
Additionally, thermostat or water pump failures frequently cause the engine to overheat.
The liners frequently turn due to bad oil or infrequent replacement.
Every 60,000 kilometers, replace the timing belt because the valves bend here when it breaks.
