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The Cummins QSK90 Radiator is a massive, custom-engineered Charge Air Cooler and Radiator Assembly designed to handle the immense heat rejection of a 90-liter, 3000-4000 horsepower diesel engine. Its primary function is to cool both the engine jacket water and the compressed intake air (charge air) after it leaves the turbochargers.
Features
Rejects heat from the engine's closed-loop cooling system.
The coolant absorbs heat from the cylinder liners, cylinder heads, and other engine components.
Cools the intensely hot, compressed air coming from the turbochargers
CUMMINS | 4BT,6BT,6BTA,NT855,NTA855,KTA19,KTA38,KTA50,QSK23,QSK50,QSK60,QSK78,QSK90,VTA28,LTA |
MTU | 12V2000,16V2000,18V2000,12V4000,16V4000,20V4000 |
MITSUBISHI | S6R,S12R,S12H,S16R,S16R2,S12A2 |
PERKINS | 4006,4006-TAG,4008-TAG,4012-46TAG,4016-61TRG |
CAT | 3512,3516B,3508B |
Maintance and Service
4-Year Warranty – Every radiator is backed by a 4-year warranty, ensuring long-term reliability and peace of mind.
Fast Delivery – Standard models in stock can be shipped within 24 hours, reducing downtime for your operations.
Customized Solutions – We provide tailor-made cooling systems to meet the exact requirements of your engines and working environments.
At SINRUI, every radiator is manufactured in our modern workshop with strict process control. From precision copper tube forming and fin assembly to high-strength frame welding, each step follows international standards to ensure durability and performance.
Our factory is ISO 9001 certified, and every unit undergoes rigorous leak testing, pressure testing, and thermal performance verification before delivery. This guarantees that customers receive radiators with consistent quality, long service life, and reliable cooling efficiency.

Pictures of Sinrui's production workshop
Radiator product quality inspection, packaging and delivery