Engine & identification
Vehicle identification
| No. of cylinders Type | 5/DOHC |
|---|---|
| Capacity cc | 2387 |
Valve clearances
Valve clearances on the Alfa Romeo 166 2.4 JTD 20V (2005–2007) are hydraulic — they self-adjust, so no manual clearance figure applies.
| Valve clearance - INLET mm | Hydraulic |
|---|---|
| Valve clearance - EXHAUST mm | Hydraulic |
Engine oil & fluids
Engine oil
The Alfa Romeo 166 2.4 JTD 20V (2005–2007) takes 5.0 litres of engine oil with the filter.
See the reference table for the complete engine oil entries and their conditions.
Manual gearbox
The manual gearbox has a listed capacity of 2.9-3.1 litres. The specified oil is SAE 75W-85 semi-synthetic, with classification GL-4.
Coolant
The listed total cooling-system capacity is 9.1 litres.
Grades, filling conditions and capacities
| Engine oil options | |
|---|---|
| Ambient temperature range | All temperatures |
| Engine oil grade SAE | 5W-40 Synthetic |
| Engine oil classification OEM | Fiat 9.55535-M2 |
| Engine oil classification API/ACEA | CF/B4 |
| Ambient temperature range | -15°C➞ |
| Engine oil grade SAE | 10W-40 Synthetic |
| Engine oil classification API/ACEA | CF/B3 |
| Engine with filter(s) litres | 5.0 |
| Other lubricants and capacities | |
| Manual transmission oil grade SAE | 75W-85 Semi-synthetic |
| Manual transmission oil classification | GL-4 |
| Manual transmission litres | 2.9-3.1 |
| Cooling system - total capacity litres | 9.1 |
| Brake fluid Type | DOT 4 |
| Power steering fluid Type | Dexron II |
| Power steering fluid litres | 1.4 |
Brakes & wear limits
Brake disc thickness
Brake discs on the Alfa Romeo 166 2.4 JTD 20V (2005–2007) are replaced at a minimum thickness of 26 mm (ventilated) front and 9 mm rear.
| Minimum disc thickness for replacement - ventilated Front | 26 mm |
|---|---|
| Minimum disc thickness for replacement Rear | 9 mm |
Brake disc and drum dimensions
| Disc runout Front | 0,15 mm |
|---|---|
| Disc runout Rear | 0,15 mm |
| Minimum pad thickness Front | 1,5 mm |
| Minimum pad thickness Rear | 1,5 mm |
Service & electrical
Starting and charging
| Battery V/RC(Ah) | 12 |
|---|
Tightening torques
| Other engine tightening torques | |
|---|---|
| Sump drain bolt | 21 Nm |
| Chassis tightening torques | |
| Front hub | 70 Nm+50° |
| Rear hub | 320 Nm |
| Brake disc to hub Front | 17 Nm |
| Brake caliper to carrier Front | 27 Nm |
| Brake caliper/carrier to hub Front | 160 Nm |
| Brake disc to hub Rear | 12 Nm |
| Brake caliper to carrier Rear | 27 Nm |
| Brake caliper/carrier to hub Rear | 57 Nm |
| Road wheels | 86±8 Nm |
Air conditioning
| No. of AC service connectors | 2 |
|---|---|
| Air conditioning restrictor type | Expansion valve |
| Compressor clutch/magnetic coupling | Yes |
| Compressor variable displacement solenoid | No |
| Air conditioning refrigerant Type | R134a |
| Air conditioning refrigerant quantity grams | 500 |
| Air conditioning oil group | PAG |
| Air conditioning oil Type | Dens Oil 8 |
| Air conditioning oil quantity cm³ | 130 |
| Air conditioning oil viscosity ISO | 46 |
Frequently asked questions
How much oil does the Alfa Romeo 166 2.4 JTD 20V take?
The Alfa Romeo 166 2.4 JTD 20V (2005–2007) takes 5.0 litres of engine oil with the filter. See the reference table for the complete engine oil entries and their conditions.
What are the valve clearances for the Alfa Romeo 166 2.4 JTD 20V?
Valve clearances on the Alfa Romeo 166 2.4 JTD 20V (2005–2007) are hydraulic — they self-adjust, so no manual clearance figure applies.
What is the minimum brake disc thickness for the Alfa Romeo 166 2.4 JTD 20V?
Brake discs on the Alfa Romeo 166 2.4 JTD 20V (2005–2007) are replaced at a minimum thickness of 26 mm (ventilated) front and 9 mm rear.