ISC8.3 for Fire & Emergency (EPA 2010)


ISC8.3 for Fire & Emergency (EPA 2010)
Proven Performance. Every Call. ISC8.3 for EPA 2010.

Year after year, in every type of vehicle from EMS vehicles to pumpers, Cummins ISC has earned the trust of firefighting professionals and first responders. You can expect the same great performance and reliability from the ISC8.3 EPA 2010 that you currently get from ISC-powered vehicles.

With heavy-duty features like replaceable wet liners, the ISC8.3 has one of the highest power-to-weight ratios in its class.

It features Cummins XPI fuel system – the same technology that’s used on the ISX15. This high pressure system allows the ISC8.3 to run cleaner, quieter and stronger than ever before.

The aftertreatment system combines cooled EGR with proven Selective Catalytic Reduction (SCR) technology, and has been fully integrated with the engine to deliver near-zero emissions and stronger performance at every rpm.

Simply put, the ISC8.3 is designed to work harder for you. Every call.

More information on the maintenance intervals for this engine are available online or by speaking with your Cummins representative.


Cummins PowerSpec is an electronic tool that makes it possible to tailor the operation of Cummins engines in every on-highway application.

Available for: On-Highway, Fire & Emergency

See ISC PowerSpec Engine Features


Advertised Horsepower   270-380 hp  201-283 kW 
Peak Torque  800-1050 lb-ft  1085-1424 N•m 
Governed Speed  2200 rpm  
Clutch Engagement Torque  500 lb-ft  678 N•m 
Number of Cylinders 


Oil System Capacity  6.3 U.S. gallons  23.8 liters 
System Weight 1,895 lb  859 kg 
Engine (Dry)  1,695 lb  769 kg
Aftertreatment System*  200 lb 90 kg 
*Increase over standard muffler and does not include chassis OEM-supplied components.

Product Finder Specifications

Certification Level EPA 2010
Power 270 - 380 hp / 201 - 283 kW
Torque 800 - 1050 lb-ft / 1085 - 1424 N•m


Engine Model  Advertised HP  Peak Torque  Governed Speed 
ISC8.3 270 


 800 @ 1300


ISC8.3 300


 860 @ 1400


ISC8.3 330


 1000 @ 1400


ISC8.3 350


 1000 @ 1400


ISC8.3 380*


 1050 @ 1400




XPI Fuel System – The proven technology of the XPI common-rail fuel system delivers a precise quantity of fuel at ultra-high pressures. This, together with more robust electronic engine controls, enables multiple injection events per cycle.  Flexibility in injection timing maximizes fuel economy and performance while decreasing exhaust emissions.

Heavy-Duty Design – Rugged features include replaceable wet liners, roller followers, by-pass oil filtration and targeted piston cooling for longer service in the toughest work environments.

VGT™ Turbocharger – The Cummins VGT Turbocharger is both simple and precise. Electric actuation allows infinite adjustment, providing the exact amount of boost necessary for superior response. The proven sliding-nozzle design has best-in-class reliability and durability.

Cooled EGR – This next-generation system lowers combustion temperatures for reduced emissions and optimized fuel economy.

Fully Integrated Electronic Controls – A single higher-capacity Electronic Control Module (ECM) controls everything from air intake to exhaust aftertreatment for peak performance and near-zero emissions.

Cummins Aftertreatment System – The proven Cummins Particulate Filter reduces particulate matter by over 90%. In 2010 it is combined with Cummins SCR to meet emissions standards while maintaining best-in-class performance, reliability and durability. Cummins SCR technology has been proven in over 200,000 European vehicles and uses Diesel Exhaust Fluid (DEF) to achieve NOx emissions at near-zero levels. DEF will be readily available; reference Cummins Filtration flyer LT15618 for more information.


Maintenance Item  Miles/Kilometers  Hours  Months
Oil and Filter* 15,000 mi
24,000 km 



Primary Fuel Filter**   15,000 mi
24,000 km 


Secondary Fuel Filter  30,000 mi 
48,000 km



Coolant Filter  None*** None*** None***
Overhead Adjustment  150,000 mi 
241,500 km



Standard Coolant Change****   60,000 mi  96,000 km


Coalescing Filter  Every 3rd to 4th Oil Change Interval 
DEF Filter  200,000 mi 320,000 km    
Particulate Filter
200,000 mi
320,000 km
or 6,500 hours
*Assuming normal duty cycle for fire/emergency vehicle applications.
**OEM-supplied; intervals may vary.
*** If engine is equipped with an optional coolant filter, it will need to be replaced on the same intervals as the oil filter. Regardless if the engine is or is not equipped with a coolant filter, SCA/DCA additive levels must be checked according to the interval listed in the Owners Manual.
**** Extended coolant and drain/flush/fill intervals may be followed when certain requirements are met. For more information on these requirements, refer to Cummins Coolant Requirements and Maintenance Service Bulletin 3666132.

Brochures Available

Title Bulletin Number Request View  
Cummins Particulate Filter For Fire And Emergency Vehicles Flyer (EPA 2007 and EPA 2010) 4971356 Request View  Download
Engines And Commercial Mobile Generators For Fire And Emergency Applications Brochure (2010) 4971218 Request View  Download