From 1988 to 1995, the company produced the 2.4-liter Opel C24NE or LU6 engine, which was fitted to the company’s biggest models, including the Frontera SUV and Omega. Since this power unit was developed using the outdated 1.6N engine, it has nothing to do with the C20NE.

The engines C20NE, C20XE, C20LET, and C30SE are also part of the C20/30 line.
The engine was mounted on:
- Opel Frontera A (U92) in 1991 – 1995;
- Opel Omega A (V87) in 1988 – 1993.
Specifications
| Production years | 1988-1995 |
| Displacement, cc | 2410 |
| Fuel system | distributed injection |
| Power output, hp | 125 |
| Torque output, Nm | 195 |
| Cylinder block | cast iron R4 |
| Block head | cast iron 8v |
| Cylinder bore, mm | 95 |
| Piston stroke, mm | 86 |
| Compression ratio | 9.2 |
| Features | no |
| Hydraulic lifters | yes |
| Timing drive | chain |
| Phase regulator | no |
| Turbocharging | no |
| Recommended engine oil | 5W-30 |
| Engine oil capacity, liter | 6.5 |
| Fuel type | petrol |
| Euro standards | EURO 1 |
| Fuel consumption, L/100 km (for Opel Frontera 1993) — city — highway — combined |
14.6 8.4 11.3 |
| Engine lifespan, km | ~400 000 |
| Weight, kg | 155 |
Disadvantages of the C24NE engine
This engine has no noticeable flaws and is incredibly durable;
The only things that qualify as frequent are exhaust manifold gasket burnout and lubrication leaks;
Hydraulic lifters frequently fail and start to knock due to low-quality oil; on specialized forums, people occasionally complain about oil getting into the cooling system; the timing chain here is stretched and needs to be replaced at a run of approximately 300 thousand kilometers.
