The 4.0-liter Land Rover 406PN engine was produced at the Cologne plant from 2005 to 2009 and was installed only in the Discovery 3 SUV in modifications for the US and Australian markets. A similar power unit can be found under the hood of the third generation of the Ford Explorer. This motor belongs to the Ford Cologne V6 line.
AJ-V6 family: 306PN, 406PN.
Specifications
| Production years | 2005-2009 |
| Displacement, cc | 4009 |
| Fuel system | distributed injection |
| Power output, hp | 219 |
| Torque output, Nm | 346 |
| Cylinder block | cast iron V6 |
| Block head | aluminum 12v |
| Cylinder bore, mm | 100.4 |
| Piston stroke, mm | 84.4 |
| Compression ratio | 9.7 |
| Features | SOHC |
| Hydraulic lifters | yes |
| Timing drive | chain |
| Phase regulator | no |
| Turbocharging | no |
| Recommended engine oil | 5W-30 |
| Engine oil capacity, liter | 5.7 |
| Fuel type | petrol |
| Euro standards | EURO 3 |
| Fuel consumption, L/100 km (for Land Rover Discovery 3 2008) — city — highway — combined |
18.5 10.1 13.4 |
| Engine lifespan, km | ~400 000 |
| Weight, kg | 172 |
The engine was installed on:
- Land Rover Discovery 3 (L319) in 2005 – 2009.
Disadvantages of the Land Rover 406PN engine
- With reliability, this engine is doing well, but fuel consumption is not encouraging;
- The main problems here are delivered by an unusual and not very reliable timing chain;
- On high mileage, it is often necessary to repair both cylinder heads with the replacement of all valves;
- Also, the EGR tube regularly cracks here and the crankshaft rear oil seal sweats.
Frequently asked questions about the Land Rover 406PN
How much power does the Land Rover 406PN make?
The Land Rover 406PN develops 219 hp and 346 Nm of torque.
How much oil does the Land Rover 406PN take and which one?
Engine oil capacity: 5.7 liters. Recommended oil: 5W-30.
Does the Land Rover 406PN have a timing belt or chain?
The Land Rover 406PN uses a timing chain.
Is the Land Rover 406PN turbocharged?
No, the Land Rover 406PN is naturally aspirated.
Does the Land Rover 406PN need valve clearance adjustment?
No, the Land Rover 406PN has hydraulic lifters, so the valve clearances do not need to be adjusted.
How long does the Land Rover 406PN last?
The typical lifespan of the Land Rover 406PN is ~400 000 km with proper maintenance.
What is the fuel consumption of the Land Rover 406PN?
Land Rover Discovery 3 2008: city 18.5, highway 10.1, combined 13.4 L/100 km.
What cars was the Land Rover 406PN installed on?
Land Rover Discovery 3 (L319) in 2005 - 2009.
What are the common problems of the Land Rover 406PN?
With reliability, this engine is doing well, but fuel consumption is not encouraging. The main problems here are delivered by an unusual and not very reliable timing chain. All known problems.
What engines are related to the Land Rover 406PN?
AJ-V6 family: 306PN.
