The 2.2-liter diesel Alfa Romeo JTDM has been produced by CNH Industrial since 2015 for the Giulia and Stelvio and later also for the Jeep Wrangler. It has an aluminum block and produces 136-210 hp; there is a cast-iron-block version for the Fiat Ducato.
Specifications
| Production years | since 2015 |
| Displacement, cc | 2143 |
| Fuel system | Common Rail |
| Power output, hp | 136 – 210 |
| Torque output, Nm | 380 – 470 |
| Cylinder block | aluminum R4 |
| Block head | aluminum 16v |
| Cylinder bore, mm | 83 |
| Piston stroke, mm | 99 |
| Compression ratio | 15.5 |
| Features | DOHC |
| Hydraulic lifters | yes |
| Timing drive | belt |
| Phase regulator | no |
| Turbocharging | Garrett GTD1752VRK |
| Recommended engine oil | 0W-20 |
| Engine oil capacity, liter | 4.0 |
| Fuel type | diesel |
| Fuel consumption, L/100 km (for Alfa Romeo Stelvio 2019) — city — highway — combined |
5.5 4.4 4.8 |
| Engine lifespan, km | ~300 000 |
| Weight, kg | 158 |
The engine was installed on:
- Alfa Romeo Giulia II (Type 952) since 2015;
- Alfa Romeo Stelvio I (Type 949) since 2016.
Disadvantages of the Alfa Romeo JTDM engine
- Early engines suffered from oil vapor contaminating the air filter; the crankcase ventilation was redesigned in 2017;
- Early engines also had coolant leaks from the thermostat and its pipes;
- Watch the timing belt: if it breaks, the valves bend;
- Like all modern diesels, it suffers from fouling of the intake, EGR valve and particulate filter; there are also complaints about the oil pump.
Frequently asked questions about the Alfa Romeo JTDM
How much power does the Alfa Romeo JTDM make?
The Alfa Romeo JTDM develops 136 - 210 hp and 380 - 470 Nm of torque.
How much oil does the Alfa Romeo JTDM take and which one?
Engine oil capacity: 4.0 liters. Recommended oil: 0W-20.
Does the Alfa Romeo JTDM have a timing belt or chain?
The Alfa Romeo JTDM uses a timing belt.
Is the Alfa Romeo JTDM turbocharged?
Yes, the Alfa Romeo JTDM is turbocharged (Garrett GTD1752VRK).
Does the Alfa Romeo JTDM need valve clearance adjustment?
No, the Alfa Romeo JTDM has hydraulic lifters, so the valve clearances do not need to be adjusted.
How long does the Alfa Romeo JTDM last?
The typical lifespan of the Alfa Romeo JTDM is ~300 000 km with proper maintenance.
What is the fuel consumption of the Alfa Romeo JTDM?
Alfa Romeo Stelvio 2019: city 5.5, highway 4.4, combined 4.8 L/100 km.
What cars was the Alfa Romeo JTDM installed on?
Alfa Romeo Giulia II (Type 952) since 2015; Alfa Romeo Stelvio I (Type 949) since 2016.
What are the common problems of the Alfa Romeo JTDM?
Early engines suffered from oil vapor contaminating the air filter; the crankcase ventilation was redesigned in 2017. Early engines also had coolant leaks from the thermostat and its pipes. All known problems.
