When it comes to Class A motorhomes, nothing provides more luxury and power than the Cummins X12. 

• Up to 500 HP and 1700 lb-ft of torque 
• Compact design for easier access to maintenance points
• 20% stronger compression braking
• Annual maintenance intervals

Advances to the emissions system provides exceptional thermal efficiency, minimizing regeneration and improving fuel efficiency. With the highest power-to-weight ratio of any heady-duty engine, the Cummins X12 is the ideal choice for your luxury Class A motorhome.

Features & Benefits

Support.

• Cummins on Every™ Corner – Over 3,700 authorized locations across North America, to support parts and service needs.

• Peace of Mind – Base warranty backed by Cummins for a full 5 years/100,000 miles, whichever comes first. Up to 8 years of optional full engine coverage, including injectors.

• Cummins Guidanz™ and INLINE™ Mini – Read real time engine data and email fault information from your smart phone to speed up the repair process.

• QuickServe™ Online Mobile – Provides complete parts and service information based on specific ESNs.

• Easier Maintenance – The compact design of the X12, together with easy service points for scheduled maintenance increases uptime.

• Get the Latest – Need more information about the Cummins X12 engine or Cummins Onan generators? Visit the Motorhome & RV section of cummins.com