The 2.0-liter Rover 20K4N engine was assembled at a factory in the UK from 1998 to 2004 and installed on the most popular concern models of its time with indexes 45 and 75. Unlike its older brother, this engine was offered in only one version with a capacity of 150 hp.
KV6-series family: 20K4N, 25K4N.
Specifications
| Production years | 1998-2004 |
| Displacement, cc | 1997 |
| Fuel system | distributed injection |
| Power output, hp | 150 |
| Torque output, Nm | 185 |
| Cylinder block | aluminum V6 |
| Block head | aluminum 24v |
| Cylinder bore, mm | 80 |
| Piston stroke, mm | 66.2 |
| Compression ratio | 10.5 |
| Features | VIS |
| Hydraulic lifters | yes |
| Timing drive | belt |
| Phase regulator | no |
| Turbocharging | no |
| Recommended engine oil | 5W-30 |
| Engine oil capacity, liter | 5.2 |
| Fuel type | petrol |
| Euro standards | EURO 3 |
| Fuel consumption, L/100 km (for Rover 45 2000) — city — highway — combined |
12.9 7.6 9.6 |
| Engine lifespan, km | ~240 000 |
| Weight, kg | 177.8 |
The engine was installed on:
- Rover 45 I (RT) in 1999 – 2004;
- Rover 75 I (RJ) in 1998 – 2004.
Disadvantages of the Rover 20K4N engine
- Structurally, this is a motor with wet liners and they can sag when overheated;
- Sagging liners leads to a mixture of oil with antifreeze and a major overhaul awaits you;
- Another well-known engine problem is the ingress of lubricant into the throttle assembly;
- If the three-belt timing belt is incorrectly replaced, it is easy to damage the camshafts here;
- Weaknesses also include a thermostat, pump, cooling fan.
Frequently asked questions about the Rover 20K4N
How much power does the Rover 20K4N make?
The Rover 20K4N develops 150 hp and 185 Nm of torque.
How much oil does the Rover 20K4N take and which one?
Engine oil capacity: 5.2 liters. Recommended oil: 5W-30.
Does the Rover 20K4N have a timing belt or chain?
The Rover 20K4N uses a timing belt.
Is the Rover 20K4N turbocharged?
No, the Rover 20K4N is naturally aspirated.
Does the Rover 20K4N need valve clearance adjustment?
No, the Rover 20K4N has hydraulic lifters, so the valve clearances do not need to be adjusted.
How long does the Rover 20K4N last?
The typical lifespan of the Rover 20K4N is ~240 000 km with proper maintenance.
What is the fuel consumption of the Rover 20K4N?
Rover 45 2000: city 12.9, highway 7.6, combined 9.6 L/100 km.
What cars was the Rover 20K4N installed on?
Rover 45 I (RT) in 1999 - 2004; Rover 75 I (RJ) in 1998 - 2004.
What are the common problems of the Rover 20K4N?
Structurally, this is a motor with wet liners and they can sag when overheated. Sagging liners leads to a mixture of oil with antifreeze and a major overhaul awaits you. All known problems.
What engines are related to the Rover 20K4N?
KV6-series family: 25K4N.
