Dodge Engine Block Heater
Installation and Locations

Dodge Engine Block Heater-Although Cummins builds the diesel engine for Dodge pickups, the block heaters are installed and located in the same place for Dodge and non-Dodge applications. When installing a freeze plug style heater, make sure that the freeze plug bore is cleaned and that the o-ring on the new heater is lightly greased before installing. When installing the NPT (pipe thread) style heater, use a quality sealing compound (such as #2 Permatex)to prevent leaks.

5.9 Mechanical (12 Valve)
Replaces freeze plug on Right side on engine.

5.9 ISB 24V (through 2002)
Installs in 3/4" NPT port to Rear of oil cooler.

ISB (2005-2006)
Replace freeze plug opening on Right front side of engine. Must have threaded bolt holes in block for attaching mounting plate.

ISB (2007)
Installs in 3/4" NPT port to Rear of oil cooler.

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