The SC25/27G series engine is a product improved and designed by Shanghai Diesel Company based on the original 12V135 generator set dedicated diesel engine. It has achieved significant upgrades in product quality, reliability, economy, vibration noise, and appearance, with the SC27G stroke extended to 155mm.

Most parts of this series of engines are interchangeable with the original model and are the preferred supporting power for commonly used generator sets built according to SAIC MOTOR manufacturing standards.

1. Improve all sealing gaskets to improve the reliability of diesel engines.

2. The symmetrical design of dual water pumps and dual oil pumps improves the cooling and lubrication capacity, reduces the appearance of the water tank, and meets the needs of different environmental temperatures.

3. The exhaust pipe was changed to a two-stage assembly, optimizing the sealing structure to reduce the probability of air leakage, and the intake pipe was changed to a casting structure.

4. Redesign the fuel pipeline, improve the layout of other peripheral pipelines and air filters, and ensure a reasonable layout with a more industrial design feel.

5. The use of an expansion type connecting rod makes maintenance and repair more convenient.