ISC for Motorhome (EPA 07)


ISC for Motorhome (EPA 07)The Cummins ISC has built a reputation of delivering additional performance when a little extra is needed. With 8.3 liters of displacement and the extra horsepower and torque, the ISC is designed to provide the ratings and performance to deal with heavier loads and steeper grades. The ISC also utilizes the Cummins patented Variable Geometry Turbocharger (VG Turbo) and High Pressure Common Rail (HPCR) fuel system to provide enhanced engine response for outstanding driveability. The ISC has long had a low cost of ownership resulting from its exceptional fuel economy and long oil change intervals, but it gets even better because the VG Turbo eliminates the expense and maintenance costs associated with an add-on exhaust brake.

Plus, you get exclusive Cummins programs like Coach Care™ to meet your service needs as you travel across North America in your motorhome. All backed by the most extensive customer support network in North America.

For Cummins-branded merchandise, electronic tools, literature and more, visit our PowerStore web site.


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, Recreational Vehicle, Motorhome Engines

See ISC PowerSpec Engine Features


Advertised Horsepower 330-360 bhp 246-268 kW
Peak Torque 1000-1050 lb-ft 1356-1424 N•m
Governed Speed 2200 rpm
Clutch Engagement Torque 500 lb-ft 678 N•m
Number of Cylinders 6
Oil System Capacity 6.3 U.S. gallons 23.8 liters
System Weight 1,680 lb 762 kg
Engine (Dry) 1,630 lb 739 kg
Aftertreatment* 50 lb 23 kg

*Increase over standard muffler

Cummins is a pioneer in product improvement. Thus specifications may change without notice.


Product Finder Specifications

Certification Level EPA 2007
Power 330 - 360 hp / 246 - 268 kW
Torque 1000 - 1050 lb-ft / 1356 - 1424 N•m


Engine Model Advertised hp (kW) Peak Torque lb-ft (N•m) @ rpm Governed Speed
ISC 360 360 (268) 1050 (1424) @ 1400 2200
ISC 330 330 (246) 1000 (1356) @ 1400 2200

Click any of the above ratings to download an electronic PDF spec sheet.


  Miles Kilometers Months
Oil and Filter 15,000 mi
24,000 km
Prefilter/Water Separator Fuel Filter* 15,000 mi
24,000 km
Pressure-Side Fuel Filter* 30,000 mi
48,000 km
Coolant Filter None** None**
Overhead Adjustment 150,000 mi
241,500 km
Coalescing Filter 60,000 mi
96,000 km
Particulate Filter Cleaning 200,000-400,000 mi
320,000-640,000 km

*Oil, fuel and water filters should be changed at every oil change.

**If engine is equipped with an optional coolant filter, it will need to be replaced on the same intervals as the oil filter.

For additional details download the ISC RV Maintenance and Operation Guide.

See your Owner's Manual for every detail. And when it's time for maintenance, be sure to visit your authorized Cummins distributor or dealer.

Cummins ISC is fully compatible with long-life coolant/antifreeze formulas which allow changes out to 6 years. Follow maintenance guidelines recommended by the manufacturer for safe use with extended service intervals.

For complete maintenance information, please consult your Owner's Manual or Operations and Maintenance Manual.

Brochures Available

Title Bulletin Number Request View  
National Overhaul Warranty For MidRange Engines Flyer 4021552 Request View  Download