ISL8.9Bus Engines
TypeInline 6 cylinders, water-cooled, four strokes, electronically-controlled high pressure injection
Bore×stroke (mm)114×145
Aspirationcharged, inter-cooled
Maximum power(Hp/kw)380/280
Maximum torque(N·m)1700
Control systemECM
Fuel systemBOSCH High pressure common rail system
Emission certificationNS V/Euro V, NS IV/Euro IV, Euro Ⅲ
Dry weight (Kg)704
  • Product Advantages
  • Product Portfolio
Product Advantages

Cummins ISL series 8.9L full-authority electronic control engines, ranging from 290-380 Hp (213-280 Kw). Compared to engines with same displacement, these engines are lighter and only weighs 704 kg, with more compact structure and higher power. Featuring ultra high output per liter and low speed torque, ISL's power can be as good as heavy-duty engines with larger displacement. With stable and reliable performance, durability and supreme fuel economy, ISL can greatly increase carrying capacity and operation efficiency of vehicles, thus becoming an ideal power choice of heavy truck, tractor and 11-14 meter-long highway bus, tour bus, public transit, school bus applications.

Leading manufacturing technology 

Integrated design of cylinder block and oil circuit, forged crankshaft with high tension steel, highly durable pistons and liner with special surface treatment process all ensure the engine's reliability and durability.

Advanced electronic intelligence platform 

Electronic control module with ultra large capacity share information among high speed datalinks, to ensure that the engine maintains the best operating status, effective fuel savings and low emissions under various loads.

Effective fuel saving 

With higher injection pressure up to 1600 bar, High Pressure Common Rail Fuel System features  more precise control of injection timing and amount of fuel, further improving low-speed performance and cold start performance.

Excellent power output 

Fast startup, good acceleration and gradeability, superior torque output at low speed。

Economical usage 

Highly integrated engine subsystems can realize excellent power, ultra long service life, and long maintenance intervals.

Leading emission level 

The NS V version is developed on the same platform as EEV version, featuring high durability and reliability. It can be upgraded to meet Euro V/EEV standard by adjusting its urea injection amount and upgrading the aftertreatment system, complicated structural adjustment is not necessary.

Product Portfolio
Engine model



Rated power output


Peak torque


CylindersDisplacement (L)AspirationAfter treatment
ISL290 50NS V/EuroV213@21001055@1100-170068.9charged, inter-cooledSCR
ISL292 50NS V/EuroV215@21001055@1100-170068.9charged, inter-cooledSCR
ISL315 50NS V/EuroV232@21001200@1100-170068.9charged, inter-cooledSCR
ISL325 50NS V/EuroV239@21001350@1100-150068.9charged, inter-cooledSCR
ISL340 50NS V/EuroV250@21001500@1200-140068.9charged, inter-cooledSCR
ISL360 50NS V/EuroV265@21001550@1100-140068.9charged, inter-cooledSCR
ISL375 50NS V/EuroV275@21001550@1100-150068.9charged, inter-cooledSCR
ISL380 50NS V/EuroV280@21001700@1300-140068.9charged, inter-cooledSCR
ISL280 51NS V/EuroV212@21001055@1100-170068.9charged, inter-cooledSCR
ISL320 51NS V/EuroV239@21001350@1100-150068.9charged, inter-cooledSCR
ISL340 51NS V/EuroV252@21001500@1200-140068.9charged, inter-cooledSCR
ISLe290 40NS IV/EuroIV213@21001050@140068.9charged, inter-cooledSCR
ISLe292 40NS IV/EuroIV215@21001200@140068.9charged, inter-cooledSCR
ISLe315 40NS IV/EuroIV231.5@21001200@140068.9charged, inter-cooledSCR
ISLe325 40NS IV/EuroIV239@21001350@140068.9charged, inter-cooledSCR
ISLe340 40NS IV/EuroIV250@21001425@140068.9charged, inter-cooledSCR
ISLe360 40NS IV/EuroIV265@21001550@140068.9charged, inter-cooledSCR
ISLe375 40NS IV/EuroIV275@21001550@140068.9charged, inter-cooledSCR
ISLe290 41NS IV/EuroIV213@21001050@140068.9charged, inter-cooledSCR
ISLe310 41NS IV/EuroIV228@21001200@140068.9charged, inter-cooledSCR
ISLe325 41NS IV/EuroIV239@21001350@140068.9charged, inter-cooledSCR
ISLe340 41NS IV/EuroIV250@21001425@140068.9charged, inter-cooledSCR
ISLe270 30EuroIII201@21001050@1000-190068.9charged, inter-cooled/
ISLe290 30EuroIII213@21001050@1000-190068.9charged, inter-cooled/
ISLe310 30EuroIII228@21001200@1000-170068.9charged, inter-cooled/
ISLe340 30EuroIII250@21001425@1100-140068.9charged, inter-cooled/
ISLe375 30EuroIII276@21001550@1100-140068.9charged, inter-cooled/
ISLe290 31EuroIII213@21001050@1000-190068.9charged, inter-cooled/
ISLe310 31EuroIII228@22001200@1000-170068.9charged, inter-cooled/
ISLe325 31EuroIII239@22001350@1100-160068.9charged, inter-cooled/