From 2004 to 2009, the company manufactured the 4.4-liter Land Rover 448PN gasoline engine, which was installed in well-known SUVs like the Range Rover, Range Rover Sport, and Discovery 3. This engine, also known as the AJ41, was developed by Jaguar engineers especially for Land Rover.
AJ-V8 series: 306PS, 428PS, 448PN, 508PN, and 508PS.
Specifications
| Production years | 2004-2009 |
| Displacement, cc | 4394 |
| Fuel system | distributed injection |
| Power output, hp | 300 – 305 |
| Torque output, Nm | 425 – 440 |
| Cylinder block | aluminum V8 |
| Block head | aluminum 32v |
| Cylinder bore, mm | 88 |
| Piston stroke, mm | 90.3 |
| Compression ratio | 10.5 |
| Features | DOHC |
| Hydraulic lifters | no |
| Timing drive | chain |
| Phase regulator | on the intake shafts |
| Turbocharging | no |
| Recommended engine oil | 5W-30 |
| Engine oil capacity, liter | 7.7 |
| Fuel type | petrol |
| Euro standards | EURO 4 |
| Fuel consumption, L/100 km (for Range Rover Sport 2007) — city — highway — combined |
20.8 11.2 14.9 |
| Engine lifespan, km | ~400 000 |
| Weight, kg | 200 |
The engine was installed on:
- Land Rover Discovery 3 (L319) in 2004 – 2009;
- Land Rover Range Rover 3 (L322) in 2005 – 2009;
- Land Rover Range Rover Sport 1 (L320) in 2005 – 2009.
Disadvantages of the Land Rover 448PN engine
The owners’ only grievance with this dependable atmospheric engine is fuel consumption.
The most well-known engine issue is the phase regulators’ quick failure.
Overheating is not recommended for this engine because it is made entirely of aluminum.
Oil from the crankcase ventilation valve entering the intake is typically indicated by heavy smoke.
The remaining issues are related to lubrication leaks, particularly at the motor section joints.